7+(2a+2)-17=15

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Solution for 7+(2a+2)-17=15 equation:


Simplifying
7 + (2a + 2) + -17 = 15

Reorder the terms:
7 + (2 + 2a) + -17 = 15

Remove parenthesis around (2 + 2a)
7 + 2 + 2a + -17 = 15

Reorder the terms:
7 + 2 + -17 + 2a = 15

Combine like terms: 7 + 2 = 9
9 + -17 + 2a = 15

Combine like terms: 9 + -17 = -8
-8 + 2a = 15

Solving
-8 + 2a = 15

Solving for variable 'a'.

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

Add '8' to each side of the equation.
-8 + 8 + 2a = 15 + 8

Combine like terms: -8 + 8 = 0
0 + 2a = 15 + 8
2a = 15 + 8

Combine like terms: 15 + 8 = 23
2a = 23

Divide each side by '2'.
a = 11.5

Simplifying
a = 11.5

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