What's the variable for 3 (5x + 2) = 8x + 20

3 (5x + 2) = 8x + 20

Use distributive property

15x + 6=8x + 20

Subtract 8x from 15x so that the variable x is only on one side.

7x + 6 = 20

Subtract 6 from both sides

7x = 14

Divide 7 on both sides so that the only thing remaining on the left side is the variable x.

Final Answer: x = 2

3 (5x+2) = 8x+20

15x+6=8x+20

15x-8x=20-6

7x=14

then you divide both sides by 2

The answer is 2.