7(m-4)=9(m-7)

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Solution for 7(m-4)=9(m-7) equation:


Simplifying
7(m + -4) = 9(m + -7)

Reorder the terms:
7(-4 + m) = 9(m + -7)
(-4 * 7 + m * 7) = 9(m + -7)
(-28 + 7m) = 9(m + -7)

Reorder the terms:
-28 + 7m = 9(-7 + m)
-28 + 7m = (-7 * 9 + m * 9)
-28 + 7m = (-63 + 9m)

Solving
-28 + 7m = -63 + 9m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-9m' to each side of the equation.
-28 + 7m + -9m = -63 + 9m + -9m

Combine like terms: 7m + -9m = -2m
-28 + -2m = -63 + 9m + -9m

Combine like terms: 9m + -9m = 0
-28 + -2m = -63 + 0
-28 + -2m = -63

Add '28' to each side of the equation.
-28 + 28 + -2m = -63 + 28

Combine like terms: -28 + 28 = 0
0 + -2m = -63 + 28
-2m = -63 + 28

Combine like terms: -63 + 28 = -35
-2m = -35

Divide each side by '-2'.
m = 17.5

Simplifying
m = 17.5

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