(m+3)(2m-5)=2(m^2-9)

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Solution for (m+3)(2m-5)=2(m^2-9) equation:


Simplifying
(m + 3)(2m + -5) = 2(m2 + -9)

Reorder the terms:
(3 + m)(2m + -5) = 2(m2 + -9)

Reorder the terms:
(3 + m)(-5 + 2m) = 2(m2 + -9)

Multiply (3 + m) * (-5 + 2m)
(3(-5 + 2m) + m(-5 + 2m)) = 2(m2 + -9)
((-5 * 3 + 2m * 3) + m(-5 + 2m)) = 2(m2 + -9)
((-15 + 6m) + m(-5 + 2m)) = 2(m2 + -9)
(-15 + 6m + (-5 * m + 2m * m)) = 2(m2 + -9)
(-15 + 6m + (-5m + 2m2)) = 2(m2 + -9)

Combine like terms: 6m + -5m = 1m
(-15 + 1m + 2m2) = 2(m2 + -9)

Reorder the terms:
-15 + 1m + 2m2 = 2(-9 + m2)
-15 + 1m + 2m2 = (-9 * 2 + m2 * 2)
-15 + 1m + 2m2 = (-18 + 2m2)

Add '-2m2' to each side of the equation.
-15 + 1m + 2m2 + -2m2 = -18 + 2m2 + -2m2

Combine like terms: 2m2 + -2m2 = 0
-15 + 1m + 0 = -18 + 2m2 + -2m2
-15 + 1m = -18 + 2m2 + -2m2

Combine like terms: 2m2 + -2m2 = 0
-15 + 1m = -18 + 0
-15 + 1m = -18

Solving
-15 + 1m = -18

Solving for variable 'm'.

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

Add '15' to each side of the equation.
-15 + 15 + 1m = -18 + 15

Combine like terms: -15 + 15 = 0
0 + 1m = -18 + 15
1m = -18 + 15

Combine like terms: -18 + 15 = -3
1m = -3

Divide each side by '1'.
m = -3

Simplifying
m = -3

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