3 resources.
How to solve a one-variable linear equation step by step, including fractions and the variable on both sides, with a phrase-to-expression table and worked word and age problems.
Solving a system of linear equations using matrices: the matrix method X = A⁻¹B with the adjoint, worked 2×2 and 3×3 examples, the consistency test, and common mistakes.
Pair of linear equations by every method: forming them from a word problem, the ratio test, substitution, elimination, cross-multiplication and reducible equations, with worked examples.