12.1 Model and solve onestep linear equations: $ax = b$, $\frac{x}{a} = b$
Model and solve onestep linear equations: $ax = b$, $\frac{x}{a} = b$
Linear equations which can be solved with a single operation are called onestep linear equations. In this section, we will try to solve onestep linear equations represented in diagrams and in equation form.
Basic concepts:
 Understanding integer division
 Dividing integers
Lessons

1.
What is the equation represented by each diagram?

2.
Solve.

3.
Betty is baking 5 cakes and has 2 cups of icing sugar to decorate the cakes. If there is 40 g of icing sugar in each cup, how much icing sugar can Betty use for each cake?