31-7d=10

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Solution for 31-7d=10 equation: 


Simplifying
31 + -7d = 10

Solving
31 + -7d = 10

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 + -7d = 10 + -31

Combine like terms: 31 + -31 = 0
0 + -7d = 10 + -31
-7d = 10 + -31

Combine like terms: 10 + -31 = -21
-7d = -21

Divide each side by '-7'.
d = 3

Simplifying
d = 3

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