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-42=30+5x
Subtract 36 from -6 to get -42.
30+5x=-42
Swap sides so that all variable terms are on the left hand side.
5x=-42-30
Subtract 30 from both sides.
5x=-72
Subtract 30 from -42 to get -72.
x=\frac{-72}{5}
Divide both sides by 5.
x=-\frac{72}{5}
Fraction \frac{-72}{5} can be rewritten as -\frac{72}{5} by extracting the negative sign.