-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 = 32
-2a = 32

Divide each side by '-2'.
a = -16

Simplifying
a = -16

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