-90=ac

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Solution for -90=ac equation:


Simplifying
-90 = ac

Solving
-90 = ac

Solving for variable 'a'.

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

Add '-1ac' to each side of the equation.
-90 + -1ac = ac + -1ac

Combine like terms: ac + -1ac = 0
-90 + -1ac = 0

Add '90' to each side of the equation.
-90 + 90 + -1ac = 0 + 90

Combine like terms: -90 + 90 = 0
0 + -1ac = 0 + 90
-1ac = 0 + 90

Combine like terms: 0 + 90 = 90
-1ac = 90

Divide each side by '-1c'.
a = -90c-1

Simplifying
a = -90c-1

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