12a^2+9a=16a+12

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Solution for 12a^2+9a=16a+12 equation:


Simplifying
12a2 + 9a = 16a + 12

Reorder the terms:
9a + 12a2 = 16a + 12

Reorder the terms:
9a + 12a2 = 12 + 16a

Solving
9a + 12a2 = 12 + 16a

Solving for variable 'a'.

Reorder the terms:
-12 + 9a + -16a + 12a2 = 12 + 16a + -12 + -16a

Combine like terms: 9a + -16a = -7a
-12 + -7a + 12a2 = 12 + 16a + -12 + -16a

Reorder the terms:
-12 + -7a + 12a2 = 12 + -12 + 16a + -16a

Combine like terms: 12 + -12 = 0
-12 + -7a + 12a2 = 0 + 16a + -16a
-12 + -7a + 12a2 = 16a + -16a

Combine like terms: 16a + -16a = 0
-12 + -7a + 12a2 = 0

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

Subproblem 1

Set the factor '(-3 + -4a)' equal to zero and attempt to solve: Simplifying -3 + -4a = 0 Solving -3 + -4a = 0 Move all terms containing a to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -4a = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -4a = 0 + 3 -4a = 0 + 3 Combine like terms: 0 + 3 = 3 -4a = 3 Divide each side by '-4'. a = -0.75 Simplifying a = -0.75

Subproblem 2

Set the factor '(4 + -3a)' equal to zero and attempt to solve: Simplifying 4 + -3a = 0 Solving 4 + -3a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -3a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -3a = 0 + -4 -3a = 0 + -4 Combine like terms: 0 + -4 = -4 -3a = -4 Divide each side by '-3'. a = 1.333333333 Simplifying a = 1.333333333

Solution

a = {-0.75, 1.333333333}

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