-18+9a=8(1+a)-13

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Solution for -18+9a=8(1+a)-13 equation:


Simplifying
-18 + 9a = 8(1 + a) + -13
-18 + 9a = (1 * 8 + a * 8) + -13
-18 + 9a = (8 + 8a) + -13

Reorder the terms:
-18 + 9a = 8 + -13 + 8a

Combine like terms: 8 + -13 = -5
-18 + 9a = -5 + 8a

Solving
-18 + 9a = -5 + 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.
-18 + 9a + -8a = -5 + 8a + -8a

Combine like terms: 9a + -8a = 1a
-18 + 1a = -5 + 8a + -8a

Combine like terms: 8a + -8a = 0
-18 + 1a = -5 + 0
-18 + 1a = -5

Add '18' to each side of the equation.
-18 + 18 + 1a = -5 + 18

Combine like terms: -18 + 18 = 0
0 + 1a = -5 + 18
1a = -5 + 18

Combine like terms: -5 + 18 = 13
1a = 13

Divide each side by '1'.
a = 13

Simplifying
a = 13

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