-2a-(-9)=23

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Solution for -2a-(-9)=23 equation: 


Simplifying
-2a + -1(-9) = 23

Multiply -1 * -9
-2a + 9 = 23

Reorder the terms:
9 + -2a = 23

Solving
9 + -2a = 23

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + -2a = 23 + -9

Combine like terms: 9 + -9 = 0
0 + -2a = 23 + -9
-2a = 23 + -9

Combine like terms: 23 + -9 = 14
-2a = 14

Divide each side by '-2'.
a = -7

Simplifying
a = -7

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