-3d+-28=-40

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Solution for -3d+-28=-40 equation: 


Simplifying
-3d + -28 = -40

Reorder the terms:
-28 + -3d = -40

Solving
-28 + -3d = -40

Solving for variable 'd'.

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

Add '28' to each side of the equation.
-28 + 28 + -3d = -40 + 28

Combine like terms: -28 + 28 = 0
0 + -3d = -40 + 28
-3d = -40 + 28

Combine like terms: -40 + 28 = -12
-3d = -12

Divide each side by '-3'.
d = 4

Simplifying
d = 4

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