Solve for x
x=-7
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x-15-4x=6
Subtract 4x from both sides.
-3x-15=6
Combine x and -4x to get -3x.
-3x=6+15
Add 15 to both sides.
-3x=21
Add 6 and 15 to get 21.
x=\frac{21}{-3}
Divide both sides by -3.
x=-7
Divide 21 by -3 to get -7.
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