d+2=21

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Solution for d+2=21 equation: 


Simplifying
d + 2 = 21

Reorder the terms:
2 + d = 21

Solving
2 + d = 21

Solving for variable 'd'.

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

Add '-2' to each side of the equation.
2 + -2 + d = 21 + -2

Combine like terms: 2 + -2 = 0
0 + d = 21 + -2
d = 21 + -2

Combine like terms: 21 + -2 = 19
d = 19

Simplifying
d = 19

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