6a-90=15a

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Solution for 6a-90=15a equation:


Simplifying
6a + -90 = 15a

Reorder the terms:
-90 + 6a = 15a

Solving
-90 + 6a = 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.
-90 + 6a + -15a = 15a + -15a

Combine like terms: 6a + -15a = -9a
-90 + -9a = 15a + -15a

Combine like terms: 15a + -15a = 0
-90 + -9a = 0

Add '90' to each side of the equation.
-90 + 90 + -9a = 0 + 90

Combine like terms: -90 + 90 = 0
0 + -9a = 0 + 90
-9a = 0 + 90

Combine like terms: 0 + 90 = 90
-9a = 90

Divide each side by '-9'.
a = -10

Simplifying
a = -10

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