7d+14-4d+2=21

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Solution for 7d+14-4d+2=21 equation:


Simplifying
7d + 14 + -4d + 2 = 21

Reorder the terms:
14 + 2 + 7d + -4d = 21

Combine like terms: 14 + 2 = 16
16 + 7d + -4d = 21

Combine like terms: 7d + -4d = 3d
16 + 3d = 21

Solving
16 + 3d = 21

Solving for variable 'd'.

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

Add '-16' to each side of the equation.
16 + -16 + 3d = 21 + -16

Combine like terms: 16 + -16 = 0
0 + 3d = 21 + -16
3d = 21 + -16

Combine like terms: 21 + -16 = 5
3d = 5

Divide each side by '3'.
d = 1.666666667

Simplifying
d = 1.666666667

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