7-2(-a+3)=-9

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Solution for 7-2(-a+3)=-9 equation:


Simplifying
7 + -2(-1a + 3) = -9

Reorder the terms:
7 + -2(3 + -1a) = -9
7 + (3 * -2 + -1a * -2) = -9
7 + (-6 + 2a) = -9

Combine like terms: 7 + -6 = 1
1 + 2a = -9

Solving
1 + 2a = -9

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + 2a = -9 + -1

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

Combine like terms: -9 + -1 = -10
2a = -10

Divide each side by '2'.
a = -5

Simplifying
a = -5

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