.125*d-3*d+21=5.125*d-3

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Solution for .125*d-3*d+21=5.125*d-3 equation:


Simplifying
0.125d + -3d + 21 = 5.125d + -3

Reorder the terms:
21 + 0.125d + -3d = 5.125d + -3

Combine like terms: 0.125d + -3d = -2.875d
21 + -2.875d = 5.125d + -3

Reorder the terms:
21 + -2.875d = -3 + 5.125d

Solving
21 + -2.875d = -3 + 5.125d

Solving for variable 'd'.

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

Add '-5.125d' to each side of the equation.
21 + -2.875d + -5.125d = -3 + 5.125d + -5.125d

Combine like terms: -2.875d + -5.125d = -8d
21 + -8d = -3 + 5.125d + -5.125d

Combine like terms: 5.125d + -5.125d = 0.000
21 + -8d = -3 + 0.000
21 + -8d = -3

Add '-21' to each side of the equation.
21 + -21 + -8d = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -8d = -3 + -21
-8d = -3 + -21

Combine like terms: -3 + -21 = -24
-8d = -24

Divide each side by '-8'.
d = 3

Simplifying
d = 3

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