-89-15-4a=9

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Solution for -89-15-4a=9 equation: 


Simplifying
-89 + -15 + -4a = 9

Combine like terms: -89 + -15 = -104
-104 + -4a = 9

Solving
-104 + -4a = 9

Solving for variable 'a'.

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

Add '104' to each side of the equation.
-104 + 104 + -4a = 9 + 104

Combine like terms: -104 + 104 = 0
0 + -4a = 9 + 104
-4a = 9 + 104

Combine like terms: 9 + 104 = 113
-4a = 113

Divide each side by '-4'.
a = -28.25

Simplifying
a = -28.25

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