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5x+130-8x=151
Subtract 8x from both sides.
-3x+130=151
Combine 5x and -8x to get -3x.
-3x=151-130
Subtract 130 from both sides.
-3x=21
Subtract 130 from 151 to get 21.
x=\frac{21}{-3}
Divide both sides by -3.
x=-7
Divide 21 by -3 to get -7.