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3\times 3+3m\left(-1\right)=2m
Variable m cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 3m, the least common multiple of m,3.
9+3m\left(-1\right)=2m
Multiply 3 and 3 to get 9.
9-3m=2m
Multiply 3 and -1 to get -3.
9-3m-2m=0
Subtract 2m from both sides.
9-5m=0
Combine -3m and -2m to get -5m.
-5m=-9
Subtract 9 from both sides. Anything subtracted from zero gives its negation.
m=\frac{-9}{-5}
Divide both sides by -5.
m=\frac{9}{5}
Fraction \frac{-9}{-5} can be simplified to \frac{9}{5} by removing the negative sign from both the numerator and the denominator.