5d-13=2d+21

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Solution for 5d-13=2d+21 equation:


Simplifying
5d + -13 = 2d + 21

Reorder the terms:
-13 + 5d = 2d + 21

Reorder the terms:
-13 + 5d = 21 + 2d

Solving
-13 + 5d = 21 + 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
-13 + 5d + -2d = 21 + 2d + -2d

Combine like terms: 5d + -2d = 3d
-13 + 3d = 21 + 2d + -2d

Combine like terms: 2d + -2d = 0
-13 + 3d = 21 + 0
-13 + 3d = 21

Add '13' to each side of the equation.
-13 + 13 + 3d = 21 + 13

Combine like terms: -13 + 13 = 0
0 + 3d = 21 + 13
3d = 21 + 13

Combine like terms: 21 + 13 = 34
3d = 34

Divide each side by '3'.
d = 11.33333333

Simplifying
d = 11.33333333

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