3rd level Solve linear equations Using an equation to solve a word problem. An equation is a mathematical expression that features an equals sign. Solving an equation means finding a missing value ...

GCSE AQA Solving linear equations - AQA Equations and identities Forming, using and solving equations are skills needed in many different situations.

The use of concrete models for teaching students how to solve equations is often debated in scientific literature. This article aims to examine the balance model and to identify the issues that divide ...

The computational results on problems with up to 2750 variables strongly confirm our hypothesis that a combination of problem preprocessing, cutting planes, and clever branch-and-bound techniques ...