-2(-7a+4)+9=-13

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Solution for -2(-7a+4)+9=-13 equation:


Simplifying
-2(-7a + 4) + 9 = -13

Reorder the terms:
-2(4 + -7a) + 9 = -13
(4 * -2 + -7a * -2) + 9 = -13
(-8 + 14a) + 9 = -13

Reorder the terms:
-8 + 9 + 14a = -13

Combine like terms: -8 + 9 = 1
1 + 14a = -13

Solving
1 + 14a = -13

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 + 14a = -13 + -1

Combine like terms: 1 + -1 = 0
0 + 14a = -13 + -1
14a = -13 + -1

Combine like terms: -13 + -1 = -14
14a = -14

Divide each side by '14'.
a = -1

Simplifying
a = -1

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