-a+7=2a-8

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Solution for -a+7=2a-8 equation:


Simplifying
-1a + 7 = 2a + -8

Reorder the terms:
7 + -1a = 2a + -8

Reorder the terms:
7 + -1a = -8 + 2a

Solving
7 + -1a = -8 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
7 + -1a + -2a = -8 + 2a + -2a

Combine like terms: -1a + -2a = -3a
7 + -3a = -8 + 2a + -2a

Combine like terms: 2a + -2a = 0
7 + -3a = -8 + 0
7 + -3a = -8

Add '-7' to each side of the equation.
7 + -7 + -3a = -8 + -7

Combine like terms: 7 + -7 = 0
0 + -3a = -8 + -7
-3a = -8 + -7

Combine like terms: -8 + -7 = -15
-3a = -15

Divide each side by '-3'.
a = 5

Simplifying
a = 5

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