7-2(9+2)=9+a

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


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

Combine like terms: 9 + 2 = 11
7 + -2(11) = 9 + a

Multiply -2 * 11
7 + -22 = 9 + a

Combine like terms: 7 + -22 = -15
-15 = 9 + a

Solving
-15 = 9 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-15 + -1a = 9 + a + -1a

Combine like terms: a + -1a = 0
-15 + -1a = 9 + 0
-15 + -1a = 9

Add '15' to each side of the equation.
-15 + 15 + -1a = 9 + 15

Combine like terms: -15 + 15 = 0
0 + -1a = 9 + 15
-1a = 9 + 15

Combine like terms: 9 + 15 = 24
-1a = 24

Divide each side by '-1'.
a = -24

Simplifying
a = -24

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