13-2(a-1)+7a=

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Solution for 13-2(a-1)+7a= equation:


Simplifying
13 + -2(a + -1) + 7a = 0

Reorder the terms:
13 + -2(-1 + a) + 7a = 0
13 + (-1 * -2 + a * -2) + 7a = 0
13 + (2 + -2a) + 7a = 0

Combine like terms: 13 + 2 = 15
15 + -2a + 7a = 0

Combine like terms: -2a + 7a = 5a
15 + 5a = 0

Solving
15 + 5a = 0

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + 5a = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 5a = 0 + -15
5a = 0 + -15

Combine like terms: 0 + -15 = -15
5a = -15

Divide each side by '5'.
a = -3

Simplifying
a = -3

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