9-(-11a)-7a=-7

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Solution for 9-(-11a)-7a=-7 equation:


Simplifying
9 + -1(-11a) + -7a = -7

Remove parenthesis around (-11a)
9 + -1 * -11a + -7a = -7

Multiply -1 * -11
9 + 11a + -7a = -7

Combine like terms: 11a + -7a = 4a
9 + 4a = -7

Solving
9 + 4a = -7

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 + 4a = -7 + -9

Combine like terms: 9 + -9 = 0
0 + 4a = -7 + -9
4a = -7 + -9

Combine like terms: -7 + -9 = -16
4a = -16

Divide each side by '4'.
a = -4

Simplifying
a = -4

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