11+12-3=3d+7-4d

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Solution for 11+12-3=3d+7-4d equation:


Simplifying
11 + 12 + -3 = 3d + 7 + -4d

Combine like terms: 11 + 12 = 23
23 + -3 = 3d + 7 + -4d

Combine like terms: 23 + -3 = 20
20 = 3d + 7 + -4d

Reorder the terms:
20 = 7 + 3d + -4d

Combine like terms: 3d + -4d = -1d
20 = 7 + -1d

Solving
20 = 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.
20 + d = 7 + -1d + d

Combine like terms: -1d + d = 0
20 + d = 7 + 0
20 + d = 7

Add '-20' to each side of the equation.
20 + -20 + d = 7 + -20

Combine like terms: 20 + -20 = 0
0 + d = 7 + -20
d = 7 + -20

Combine like terms: 7 + -20 = -13
d = -13

Simplifying
d = -13

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