-3d+15=-7-d

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Solution for -3d+15=-7-d equation:


Simplifying
-3d + 15 = -7 + -1d

Reorder the terms:
15 + -3d = -7 + -1d

Solving
15 + -3d = -7 + -1d

Solving for variable 'd'.

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

Add 'd' to each side of the equation.
15 + -3d + d = -7 + -1d + d

Combine like terms: -3d + d = -2d
15 + -2d = -7 + -1d + d

Combine like terms: -1d + d = 0
15 + -2d = -7 + 0
15 + -2d = -7

Add '-15' to each side of the equation.
15 + -15 + -2d = -7 + -15

Combine like terms: 15 + -15 = 0
0 + -2d = -7 + -15
-2d = -7 + -15

Combine like terms: -7 + -15 = -22
-2d = -22

Divide each side by '-2'.
d = 11

Simplifying
d = 11

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