31+2d=55

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Solution for 31+2d=55 equation: 


Simplifying
31 + 2d = 55

Solving
31 + 2d = 55

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 + 2d = 55 + -31

Combine like terms: 31 + -31 = 0
0 + 2d = 55 + -31
2d = 55 + -31

Combine like terms: 55 + -31 = 24
2d = 24

Divide each side by '2'.
d = 12

Simplifying
d = 12

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