3m^2=20-7m

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Solution for 3m^2=20-7m equation:


Simplifying
3m2 = 20 + -7m

Solving
3m2 = 20 + -7m

Solving for variable 'm'.

Reorder the terms:
-20 + 7m + 3m2 = 20 + -7m + -20 + 7m

Reorder the terms:
-20 + 7m + 3m2 = 20 + -20 + -7m + 7m

Combine like terms: 20 + -20 = 0
-20 + 7m + 3m2 = 0 + -7m + 7m
-20 + 7m + 3m2 = -7m + 7m

Combine like terms: -7m + 7m = 0
-20 + 7m + 3m2 = 0

Factor a trinomial.
(-4 + -1m)(5 + -3m) = 0

Subproblem 1

Set the factor '(-4 + -1m)' equal to zero and attempt to solve: Simplifying -4 + -1m = 0 Solving -4 + -1m = 0 Move all terms containing m to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1m = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1m = 0 + 4 -1m = 0 + 4 Combine like terms: 0 + 4 = 4 -1m = 4 Divide each side by '-1'. m = -4 Simplifying m = -4

Subproblem 2

Set the factor '(5 + -3m)' equal to zero and attempt to solve: Simplifying 5 + -3m = 0 Solving 5 + -3m = 0 Move all terms containing m to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -3m = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3m = 0 + -5 -3m = 0 + -5 Combine like terms: 0 + -5 = -5 -3m = -5 Divide each side by '-3'. m = 1.666666667 Simplifying m = 1.666666667

Solution

m = {-4, 1.666666667}

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