Question

Using the properties of equality to solve the equation -3x - 9 = -21, you would _____. subtract 9 and then multiply by -3 add 9 and then multiply by -3 subtract 9 and then divide by -3 add 9 and then divide by -3

Answer 1

You would add 9 then divide by -3

(Solved problem)

1st step, add 9 on both sides.

-3x -9 = -21
+9 +9

Next step, divide by 3 on both sides.

-3x = -12
–– –––
-3x -3x

x = 4

Answer 2

You would add 9, then divide by-3.