Question

Is x = -5 a solution of 4x - (3x - 15) = -20?​

Answer 1

Answer: x=−35

Explanation:

4x−(3x−15)=−20

To find the opposite of 3x−15, find the opposite of each term

4x−3x−(−15)=−20

The opposite of −15 is 15.

4x−3x+15=−20

Combine 4x and −3x to get x.

x+15=−20

Subtract 15 from both sides.

x=−20−15

Subtract 15 from −20 to get −35.

hope this helps