18-2d+4d=30

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Solution for 18-2d+4d=30 equation: 


Simplifying
18 + -2d + 4d = 30

Combine like terms: -2d + 4d = 2d
18 + 2d = 30

Solving
18 + 2d = 30

Solving for variable 'd'.

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

Add '-18' to each side of the equation.
18 + -18 + 2d = 30 + -18

Combine like terms: 18 + -18 = 0
0 + 2d = 30 + -18
2d = 30 + -18

Combine like terms: 30 + -18 = 12
2d = 12

Divide each side by '2'.
d = 6

Simplifying
d = 6

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