(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

Remove parenthesis around (7 + 3a)
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

Remove parenthesis around (5 + 2a)
7 + 3a + 5 + 2a = 117

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

Combine like terms: 7 + 5 = 12
12 + 3a + 2a = 117

Combine like terms: 3a + 2a = 5a
12 + 5a = 117

Solving
12 + 5a = 117

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + 5a = 117 + -12

Combine like terms: 12 + -12 = 0
0 + 5a = 117 + -12
5a = 117 + -12

Combine like terms: 117 + -12 = 105
5a = 105

Divide each side by '5'.
a = 21

Simplifying
a = 21

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