21-2d=11

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Solution for 21-2d=11 equation: 


Simplifying
21 + -2d = 11

Solving
21 + -2d = 11

Solving for variable 'd'.

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

Add '-21' to each side of the equation.
21 + -21 + -2d = 11 + -21

Combine like terms: 21 + -21 = 0
0 + -2d = 11 + -21
-2d = 11 + -21

Combine like terms: 11 + -21 = -10
-2d = -10

Divide each side by '-2'.
d = 5

Simplifying
d = 5

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