Find the error then show the correct way step by step.

Question 4

The error was that in step 2, when distributing -3 into the parentheses, the person did not change the sign of 24 so that it was negative, since a negative number multiplied by a positive number will always make a negative number. Here is the correct way to solve this equation:

Distrubute -3 into the parentheses

Subtract both sides by 12

Add 15x to both sides

Divide both sides by 3

Question 5

The error was that 2 was added on both sides in step 5 instead of being subtracted from both sides. Here is the correct way to do it, starting from step 4:

Subtract both sides by 2

Divide both sides by 16

I hope this helps!

-2

7 - 9 = -2

reversed:

-2 + 9 = 7