.25d-3d+.75(d-1)=4.25

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Solution for .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 + 0.25d + -3d + 0.75d = 4.25

Combine like terms: 0.25d + -3d = -2.75d
-0.75 + -2.75d + 0.75d = 4.25

Combine like terms: -2.75d + 0.75d = -2d
-0.75 + -2d = 4.25

Solving
-0.75 + -2d = 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 + 0.75 + -2d = 4.25 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -2d = 4.25 + 0.75
-2d = 4.25 + 0.75

Combine like terms: 4.25 + 0.75 = 5
-2d = 5

Divide each side by '-2'.
d = -2.5

Simplifying
d = -2.5

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