-7d+7=21d

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Solution for -7d+7=21d equation:


Simplifying
-7d + 7 = 21d

Reorder the terms:
7 + -7d = 21d

Solving
7 + -7d = 21d

Solving for variable 'd'.

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

Add '-21d' to each side of the equation.
7 + -7d + -21d = 21d + -21d

Combine like terms: -7d + -21d = -28d
7 + -28d = 21d + -21d

Combine like terms: 21d + -21d = 0
7 + -28d = 0

Add '-7' to each side of the equation.
7 + -7 + -28d = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -28d = 0 + -7
-28d = 0 + -7

Combine like terms: 0 + -7 = -7
-28d = -7

Divide each side by '-28'.
d = 0.25

Simplifying
d = 0.25

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