Solve for x
x=3
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8x+15+4x=51
Combine 4x and 4x to get 8x.
12x+15=51
Combine 8x and 4x to get 12x.
12x=51-15
Subtract 15 from both sides.
12x=36
Subtract 15 from 51 to get 36.
x=\frac{36}{12}
Divide both sides by 12.
x=3
Divide 36 by 12 to get 3.
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