CIMT Textbook Chapter 12
Interactive Tutorials 12.1-12.4

Substitute into equations:

Substitute into equations 2:

Solving equations:

Expanding brackets:

Double brackets:

Solving equations with x on both sides:

Solving equations with brackets on both sides:

Rearranging equations 1:

Rearranging equations 2:

Rearranging equations 3:

Forming equations from word problems 1

Forming equations from word problems 2