Solve for x
x=-10
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3x+40=10
Multiply both sides of the equation by 5.
3x=10-40
Subtract 40 from both sides.
3x=-30
Subtract 40 from 10 to get -30.
x=\frac{-30}{3}
Divide both sides by 3.
x=-10
Divide -30 by 3 to get -10.
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