Solve for x
x=4
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3x+12=x+20
Use the distributive property to multiply 3 by x+4.
3x+12-x=20
Subtract x from both sides.
2x+12=20
Combine 3x and -x to get 2x.
2x=20-12
Subtract 12 from both sides.
2x=8
Subtract 12 from 20 to get 8.
x=\frac{8}{2}
Divide both sides by 2.
x=4
Divide 8 by 2 to get 4.
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