77=d-12

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Solution for 77=d-12 equation:


Simplifying
77 = d + -12

Reorder the terms:
77 = -12 + d

Solving
77 = -12 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
77 + -1d = -12 + d + -1d

Combine like terms: d + -1d = 0
77 + -1d = -12 + 0
77 + -1d = -12

Add '-77' to each side of the equation.
77 + -77 + -1d = -12 + -77

Combine like terms: 77 + -77 = 0
0 + -1d = -12 + -77
-1d = -12 + -77

Combine like terms: -12 + -77 = -89
-1d = -89

Divide each side by '-1'.
d = 89

Simplifying
d = 89

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