Solve for m
m=3
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7m=3\left(m+4\right)
Multiply both sides of the equation by 21, the least common multiple of 3,7.
7m=3m+12
Use the distributive property to multiply 3 by m+4.
7m-3m=12
Subtract 3m from both sides.
4m=12
Combine 7m and -3m to get 4m.
m=\frac{12}{4}
Divide both sides by 4.
m=3
Divide 12 by 4 to get 3.
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