7d-12+2d+2=18

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Solution for 7d-12+2d+2=18 equation:


Simplifying
7d + -12 + 2d + 2 = 18

Reorder the terms:
-12 + 2 + 7d + 2d = 18

Combine like terms: -12 + 2 = -10
-10 + 7d + 2d = 18

Combine like terms: 7d + 2d = 9d
-10 + 9d = 18

Solving
-10 + 9d = 18

Solving for variable 'd'.

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

Add '10' to each side of the equation.
-10 + 10 + 9d = 18 + 10

Combine like terms: -10 + 10 = 0
0 + 9d = 18 + 10
9d = 18 + 10

Combine like terms: 18 + 10 = 28
9d = 28

Divide each side by '9'.
d = 3.111111111

Simplifying
d = 3.111111111

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