How do you solve: 2 (7-x) + 4x=20

First expand it

Next subtract 14 - 2x + 4x so it can be 14 + 2x

Next subtract 14 from both sides

Next subtract 20 - 14 so it can be 6

Then divide both sides by 2

And lastly reduce the fraction 6/2 and once u reduce it u have your answer which is x = 3.