8-7d=-55

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Solution for 8-7d=-55 equation:


Simplifying
8 + -7d = -55

Solving
8 + -7d = -55

Solving for variable 'd'.

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

Add '-8' to each side of the equation.
8 + -8 + -7d = -55 + -8

Combine like terms: 8 + -8 = 0
0 + -7d = -55 + -8
-7d = -55 + -8

Combine like terms: -55 + -8 = -63
-7d = -63

Divide each side by '-7'.
d = 9

Simplifying
d = 9

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