7+3d-5=1+2-12+d

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Solution for 7+3d-5=1+2-12+d equation:


Simplifying
7 + 3d + -5 = 1 + 2 + -12 + d

Reorder the terms:
7 + -5 + 3d = 1 + 2 + -12 + d

Combine like terms: 7 + -5 = 2
2 + 3d = 1 + 2 + -12 + d

Combine like terms: 1 + 2 = 3
2 + 3d = 3 + -12 + d

Combine like terms: 3 + -12 = -9
2 + 3d = -9 + d

Solving
2 + 3d = -9 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
2 + 3d + -1d = -9 + d + -1d

Combine like terms: 3d + -1d = 2d
2 + 2d = -9 + d + -1d

Combine like terms: d + -1d = 0
2 + 2d = -9 + 0
2 + 2d = -9

Add '-2' to each side of the equation.
2 + -2 + 2d = -9 + -2

Combine like terms: 2 + -2 = 0
0 + 2d = -9 + -2
2d = -9 + -2

Combine like terms: -9 + -2 = -11
2d = -11

Divide each side by '2'.
d = -5.5

Simplifying
d = -5.5

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