a+15=5a-8a

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


Simplifying
a + 15 = 5a + -8a

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

Combine like terms: 5a + -8a = -3a
15 + a = -3a

Solving
15 + a = -3a

Solving for variable 'a'.

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

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

Combine like terms: a + 3a = 4a
15 + 4a = -3a + 3a

Combine like terms: -3a + 3a = 0
15 + 4a = 0

Add '-15' to each side of the equation.
15 + -15 + 4a = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 4a = 0 + -15
4a = 0 + -15

Combine like terms: 0 + -15 = -15
4a = -15

Divide each side by '4'.
a = -3.75

Simplifying
a = -3.75

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