(7+3*a)*(a*2+5)=117

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Solution for (7+3*a)*(a*2+5)=117 equation:


Simplifying
(7 + 3a)(a * 2 + 5) = 117

Reorder the terms for easier multiplication:
(7 + 3a)(2a + 5) = 117

Reorder the terms:
(7 + 3a)(5 + 2a) = 117

Multiply (7 + 3a) * (5 + 2a)
(7(5 + 2a) + 3a * (5 + 2a)) = 117
((5 * 7 + 2a * 7) + 3a * (5 + 2a)) = 117
((35 + 14a) + 3a * (5 + 2a)) = 117
(35 + 14a + (5 * 3a + 2a * 3a)) = 117
(35 + 14a + (15a + 6a2)) = 117

Combine like terms: 14a + 15a = 29a
(35 + 29a + 6a2) = 117

Solving
35 + 29a + 6a2 = 117

Solving for variable 'a'.

Reorder the terms:
35 + -117 + 29a + 6a2 = 117 + -117

Combine like terms: 35 + -117 = -82
-82 + 29a + 6a2 = 117 + -117

Combine like terms: 117 + -117 = 0
-82 + 29a + 6a2 = 0

Factor a trinomial.
(-41 + -6a)(2 + -1a) = 0

Subproblem 1

Set the factor '(-41 + -6a)' equal to zero and attempt to solve: Simplifying -41 + -6a = 0 Solving -41 + -6a = 0 Move all terms containing a to the left, all other terms to the right. Add '41' to each side of the equation. -41 + 41 + -6a = 0 + 41 Combine like terms: -41 + 41 = 0 0 + -6a = 0 + 41 -6a = 0 + 41 Combine like terms: 0 + 41 = 41 -6a = 41 Divide each side by '-6'. a = -6.833333333 Simplifying a = -6.833333333

Subproblem 2

Set the factor '(2 + -1a)' equal to zero and attempt to solve: Simplifying 2 + -1a = 0 Solving 2 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1a = 0 + -2 -1a = 0 + -2 Combine like terms: 0 + -2 = -2 -1a = -2 Divide each side by '-1'. a = 2 Simplifying a = 2

Solution

a = {-6.833333333, 2}

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