d-89-20=12

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Solution for d-89-20=12 equation: 


Simplifying
d + -89 + -20 = 12

Reorder the terms:
-89 + -20 + d = 12

Combine like terms: -89 + -20 = -109
-109 + d = 12

Solving
-109 + d = 12

Solving for variable 'd'.

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

Add '109' to each side of the equation.
-109 + 109 + d = 12 + 109

Combine like terms: -109 + 109 = 0
0 + d = 12 + 109
d = 12 + 109

Combine like terms: 12 + 109 = 121
d = 121

Simplifying
d = 121

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