2-(-a-8)-15=15

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Solution for 2-(-a-8)-15=15 equation:


Simplifying
2 + -1(-1a + -8) + -15 = 15

Reorder the terms:
2 + -1(-8 + -1a) + -15 = 15
2 + (-8 * -1 + -1a * -1) + -15 = 15
2 + (8 + 1a) + -15 = 15

Reorder the terms:
2 + 8 + -15 + 1a = 15

Combine like terms: 2 + 8 = 10
10 + -15 + 1a = 15

Combine like terms: 10 + -15 = -5
-5 + 1a = 15

Solving
-5 + 1a = 15

Solving for variable 'a'.

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

Add '5' to each side of the equation.
-5 + 5 + 1a = 15 + 5

Combine like terms: -5 + 5 = 0
0 + 1a = 15 + 5
1a = 15 + 5

Combine like terms: 15 + 5 = 20
1a = 20

Divide each side by '1'.
a = 20

Simplifying
a = 20

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