2a-7=-8

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Solution for 2a-7=-8 equation: 


Simplifying
2a + -7 = -8

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

Solving
-7 + 2a = -8

Solving for variable 'a'.

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

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

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

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

Divide each side by '2'.
a = -0.5

Simplifying
a = -0.5

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