7a-8=15a

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Solution for 7a-8=15a equation:


Simplifying
7a + -8 = 15a

Reorder the terms:
-8 + 7a = 15a

Solving
-8 + 7a = 15a

Solving for variable 'a'.

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

Add '-15a' to each side of the equation.
-8 + 7a + -15a = 15a + -15a

Combine like terms: 7a + -15a = -8a
-8 + -8a = 15a + -15a

Combine like terms: 15a + -15a = 0
-8 + -8a = 0

Add '8' to each side of the equation.
-8 + 8 + -8a = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -8a = 0 + 8
-8a = 0 + 8

Combine like terms: 0 + 8 = 8
-8a = 8

Divide each side by '-8'.
a = -1

Simplifying
a = -1

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