7d+12-4d-3=

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


Simplifying
7d + 12 + -4d + -3 = 0

Reorder the terms:
12 + -3 + 7d + -4d = 0

Combine like terms: 12 + -3 = 9
9 + 7d + -4d = 0

Combine like terms: 7d + -4d = 3d
9 + 3d = 0

Solving
9 + 3d = 0

Solving for variable 'd'.

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

Add '-9' to each side of the equation.
9 + -9 + 3d = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 3d = 0 + -9
3d = 0 + -9

Combine like terms: 0 + -9 = -9
3d = -9

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

Simplifying
d = -3

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