Solve for x
x=-6
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6-0\left(3x+40\right)=-x
Multiply 0 and 7 to get 0.
6-0=-x
Anything times zero gives zero.
6=-x
Subtract 0 from 6 to get 6.
-x=6
Swap sides so that all variable terms are on the left hand side.
x=-6
Multiply both sides by -1.
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