LinearSolver vs 20/20 Linear Inequalities Usage & Stats

LinearSolver is an app that designed to solve systems of linear equations with n variables. You enter equations in the field, then choose solving method and press a button «Solve». Then program solves your linear system. There are two methods for solving: Gaussian elimination and Cramer's rule. For more intelligibility enable the «detailed solution».

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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.