20/20 Linear Inequalities
The tutor in your pocket.
$0.99
6.1for iPhone, iPad
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20/20 Linear Inequalities Screenshots
About 20/20 Linear Inequalities
A power learning aid combines Coaching Calculators, Practice and Guide to help students master linear inequalities.
The Coaching Calculators focus on one-step, two-step and multi-step linear inequalities as well as those containing parentheses, decimals and fractions :
one-step : x − 2 ≤ 3 , x/7 ≥ 2
two-step : 3x + 8 ≤ 20, 2 ≥ 5 − 6x
multi-step : 4 + 9x ≥ 2x − 18
parentheses : 2(3 − 4x) ≤ 2x + 9
decimals : 0.25x + 1.5 = 9.9 − 0.2x
fractions : (1/2)x − 5 ≥ 3x + 1/5
Practice focuses on all of the above as well as harder inequalities with parentheses and fractions :
10 − 3(2 − 3(x + 5)) = 2x + 9
(1/2)(2x − 5) ≥ 3x + 3/4
Students learn quickly as they work with Coaching Calculators and Practice to review each step of the solving process.
The Guide includes step-by-step worked examples that highlight key differences between solving linear inequalities and solving linear equations.
The Coaching Calculators focus on one-step, two-step and multi-step linear inequalities as well as those containing parentheses, decimals and fractions :
one-step : x − 2 ≤ 3 , x/7 ≥ 2
two-step : 3x + 8 ≤ 20, 2 ≥ 5 − 6x
multi-step : 4 + 9x ≥ 2x − 18
parentheses : 2(3 − 4x) ≤ 2x + 9
decimals : 0.25x + 1.5 = 9.9 − 0.2x
fractions : (1/2)x − 5 ≥ 3x + 1/5
Practice focuses on all of the above as well as harder inequalities with parentheses and fractions :
10 − 3(2 − 3(x + 5)) = 2x + 9
(1/2)(2x − 5) ≥ 3x + 3/4
Students learn quickly as they work with Coaching Calculators and Practice to review each step of the solving process.
The Guide includes step-by-step worked examples that highlight key differences between solving linear inequalities and solving linear equations.
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What's New in the Latest Version 6.1
Last updated on Apr 8, 2024
Old Versions
This version contains minor bug fixes.
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Version History
6.1
Apr 8, 2024
This version contains minor bug fixes.
6.0
Mar 28, 2024
iOS 17 compatibility and minor bug fixes.
5.9
Dec 11, 2022
This version has minor bug fixes.
5.8
Sep 2, 2022
This version contains minor bug fixes and enhancements.
5.7
Oct 23, 2021
iOS 15 compatibility and user interface improvements. Minor bug fixes.
5.6
Apr 4, 2021
Minor bug fixes and general improvements.
5.5
Feb 17, 2021
Minor bug squashed in fraction module.
5.4
Feb 16, 2021
Now includes inequalities containing decimals. Minor bug fixes.
5.3
Feb 8, 2021
Minor bug fixes in practice modules.
5.2
Feb 6, 2021
New coaching calculators for inequalities containing parentheses and inequalities containing fractions.
5.1
Mar 22, 2020
Minor bug fixes.
5.0
Mar 19, 2020
Enhanced practice module for linear inequalities with fractions and parentheses. Minor bug fixes.
4.9
Mar 5, 2020
New linear inequalities with fractions practice. Minor bug fixes.
4.8
Feb 22, 2020
New linear inequality practice unit. Minor bug fixes.
4.7
Jan 22, 2020
Minor bug fixes and enhancements.
4.6
Jan 11, 2020
Minor bug fixes and app streamlining. An accompanying module is moving to a free app for you to GET if you wish.
4.5
Oct 5, 2019
New transpose option for linear inequalities and equations. Minor bug fixes.
4.4
Sep 19, 2019
iOS 13 and iPadOS compatibility.
4.3
Jan 20, 2019
Major revision with streamlined user interface. Minor bug fixes.
4.2
Sep 25, 2018
Universal iPhone and iPad app. iOS 12 compatibility.
4.1
Nov 1, 2017
iPhone X and iOS 11 optimization and minor bug fixes.
4.0
Sep 16, 2016
iOS 10 compatibility and bug fixes.
3.1
Sep 24, 2015
iOS 9 compatibility and bug fixes.
3.0
Apr 14, 2015
Improved Guides for iPhone 6 and iPhone 6 Plus and minor bug fixes.
2.0
Sep 26, 2013
iOS 7 version.
20/20 Linear Inequalities FAQ
Click here to learn how to download 20/20 Linear Inequalities in restricted country or region.
Check the following list to see the minimum requirements of 20/20 Linear Inequalities.
iPhone
Requires iOS 16.0 or later.
iPad
Requires iPadOS 16.0 or later.
20/20 Linear Inequalities supports English
