Solve for x
x=-4
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28=3x+12-7x
Use the distributive property to multiply 3 by x+4.
28=-4x+12
Combine 3x and -7x to get -4x.
-4x+12=28
Swap sides so that all variable terms are on the left hand side.
-4x=28-12
Subtract 12 from both sides.
-4x=16
Subtract 12 from 28 to get 16.
x=\frac{16}{-4}
Divide both sides by -4.
x=-4
Divide 16 by -4 to get -4.
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