-3(d-1)=15

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Solution for -3(d-1)=15 equation: 


Simplifying
-3(d + -1) = 15

Reorder the terms:
-3(-1 + d) = 15
(-1 * -3 + d * -3) = 15
(3 + -3d) = 15

Solving
3 + -3d = 15

Solving for variable 'd'.

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

Add '-3' to each side of the equation.
3 + -3 + -3d = 15 + -3

Combine like terms: 3 + -3 = 0
0 + -3d = 15 + -3
-3d = 15 + -3

Combine like terms: 15 + -3 = 12
-3d = 12

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

Simplifying
d = -4

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