7-(2a-9)+2=

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Solution for 7-(2a-9)+2= equation:


Simplifying
7 + -1(2a + -9) + 2 = 0

Reorder the terms:
7 + -1(-9 + 2a) + 2 = 0
7 + (-9 * -1 + 2a * -1) + 2 = 0
7 + (9 + -2a) + 2 = 0

Reorder the terms:
7 + 9 + 2 + -2a = 0

Combine like terms: 7 + 9 = 16
16 + 2 + -2a = 0

Combine like terms: 16 + 2 = 18
18 + -2a = 0

Solving
18 + -2a = 0

Solving for variable 'a'.

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

Add '-18' to each side of the equation.
18 + -18 + -2a = 0 + -18

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

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

Divide each side by '-2'.
a = 9

Simplifying
a = 9

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