0.25d-3D+.75(d-1)=4.25

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Solution for 0.25d-3D+.75(d-1)=4.25 equation: 


Simplifying
0.25d + -3D + 0.75(d + -1) = 4.25

Reorder the terms:
0.25d + -3D + 0.75(-1 + d) = 4.25
0.25d + -3D + (-1 * 0.75 + d * 0.75) = 4.25
0.25d + -3D + (-0.75 + 0.75d) = 4.25

Reorder the terms:
-0.75 + -3D + 0.25d + 0.75d = 4.25

Combine like terms: 0.25d + 0.75d = 1d
-0.75 + -3D + 1d = 4.25

Solving
-0.75 + -3D + 1d = 4.25

Solving for variable 'D'.

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

Add '0.75' to each side of the equation.
-0.75 + -3D + 0.75 + 1d = 4.25 + 0.75

Reorder the terms:
-0.75 + 0.75 + -3D + 1d = 4.25 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -3D + 1d = 4.25 + 0.75
-3D + 1d = 4.25 + 0.75

Combine like terms: 4.25 + 0.75 = 5
-3D + 1d = 5

Add '-1d' to each side of the equation.
-3D + 1d + -1d = 5 + -1d

Combine like terms: 1d + -1d = 0
-3D + 0 = 5 + -1d
-3D = 5 + -1d

Divide each side by '-3'.
D = -1.666666667 + 0.3333333333d

Simplifying
D = -1.666666667 + 0.3333333333d

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