SOLUTION: i need your help solving a two step equation 5+7x-4x=20 12x-4x=20

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Question 309148: i need your help solving a two step equation
5+7x-4x=20
12x-4x=20
Answer by texttutoring(324) About Me  (Show Source):
You can put this solution on YOUR website!
5+7x-4x=20
5+3x=20
3x=15
x=5

12x-4x=20
8x=20
x=20/8
x=5/2