Question

Drag the labels to the table to solve the equation and plot the solution as a point on a number line. Not all labels will be used.

4x − 3 = 21

Answer 1

Add 3 to both sides of the equation:

4x − 3 + 3 = 21 + 3

4x = 24

Divide both sides of the equation by 4:

4x/4 = 24/4

x = 6

The number line represents x-values, so the solution is at 6.

The line with the red colour dotted 6

Explanation:

Answer 2

First one is 4x = 24

Second one is x = 6

This one is 6