2-a=-7

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Solution for 2-a=-7 equation:


Simplifying
2 + -1a = -7

Solving
2 + -1a = -7

Solving for variable 'a'.

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

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

Combine like terms: 2 + -2 = 0
0 + -1a = -7 + -2
-1a = -7 + -2

Combine like terms: -7 + -2 = -9
-1a = -9

Divide each side by '-1'.
a = 9

Simplifying
a = 9

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