8a+15-a=85-5a-a

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Solution for 8a+15-a=85-5a-a equation:


Simplifying
8a + 15 + -1a = 85 + -5a + -1a

Reorder the terms:
15 + 8a + -1a = 85 + -5a + -1a

Combine like terms: 8a + -1a = 7a
15 + 7a = 85 + -5a + -1a

Combine like terms: -5a + -1a = -6a
15 + 7a = 85 + -6a

Solving
15 + 7a = 85 + -6a

Solving for variable 'a'.

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

Add '6a' to each side of the equation.
15 + 7a + 6a = 85 + -6a + 6a

Combine like terms: 7a + 6a = 13a
15 + 13a = 85 + -6a + 6a

Combine like terms: -6a + 6a = 0
15 + 13a = 85 + 0
15 + 13a = 85

Add '-15' to each side of the equation.
15 + -15 + 13a = 85 + -15

Combine like terms: 15 + -15 = 0
0 + 13a = 85 + -15
13a = 85 + -15

Combine like terms: 85 + -15 = 70
13a = 70

Divide each side by '13'.
a = 5.384615385

Simplifying
a = 5.384615385

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