13+7a-a=-3+8a

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Solution for 13+7a-a=-3+8a equation:


Simplifying
13 + 7a + -1a = -3 + 8a

Combine like terms: 7a + -1a = 6a
13 + 6a = -3 + 8a

Solving
13 + 6a = -3 + 8a

Solving for variable 'a'.

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

Add '-8a' to each side of the equation.
13 + 6a + -8a = -3 + 8a + -8a

Combine like terms: 6a + -8a = -2a
13 + -2a = -3 + 8a + -8a

Combine like terms: 8a + -8a = 0
13 + -2a = -3 + 0
13 + -2a = -3

Add '-13' to each side of the equation.
13 + -13 + -2a = -3 + -13

Combine like terms: 13 + -13 = 0
0 + -2a = -3 + -13
-2a = -3 + -13

Combine like terms: -3 + -13 = -16
-2a = -16

Divide each side by '-2'.
a = 8

Simplifying
a = 8

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