8d-7-4d=-31

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Solution for 8d-7-4d=-31 equation:


Simplifying
8d + -7 + -4d = -31

Reorder the terms:
-7 + 8d + -4d = -31

Combine like terms: 8d + -4d = 4d
-7 + 4d = -31

Solving
-7 + 4d = -31

Solving for variable 'd'.

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

Add '7' to each side of the equation.
-7 + 7 + 4d = -31 + 7

Combine like terms: -7 + 7 = 0
0 + 4d = -31 + 7
4d = -31 + 7

Combine like terms: -31 + 7 = -24
4d = -24

Divide each side by '4'.
d = -6

Simplifying
d = -6

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