-(a-9)=15-2a+3

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Solution for -(a-9)=15-2a+3 equation:


Simplifying
-1(a + -9) = 15 + -2a + 3

Reorder the terms:
-1(-9 + a) = 15 + -2a + 3
(-9 * -1 + a * -1) = 15 + -2a + 3
(9 + -1a) = 15 + -2a + 3

Reorder the terms:
9 + -1a = 15 + 3 + -2a

Combine like terms: 15 + 3 = 18
9 + -1a = 18 + -2a

Solving
9 + -1a = 18 + -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.
9 + -1a + 2a = 18 + -2a + 2a

Combine like terms: -1a + 2a = 1a
9 + 1a = 18 + -2a + 2a

Combine like terms: -2a + 2a = 0
9 + 1a = 18 + 0
9 + 1a = 18

Add '-9' to each side of the equation.
9 + -9 + 1a = 18 + -9

Combine like terms: 9 + -9 = 0
0 + 1a = 18 + -9
1a = 18 + -9

Combine like terms: 18 + -9 = 9
1a = 9

Divide each side by '1'.
a = 9

Simplifying
a = 9

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