d+31=7

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Solution for d+31=7 equation: 


Simplifying
d + 31 = 7

Reorder the terms:
31 + d = 7

Solving
31 + d = 7

Solving for variable 'd'.

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

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

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

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

Simplifying
d = -24

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