18=d+7

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Solution for 18=d+7 equation:


Simplifying
18 = d + 7

Reorder the terms:
18 = 7 + d

Solving
18 = 7 + 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.
18 + -1d = 7 + d + -1d

Combine like terms: d + -1d = 0
18 + -1d = 7 + 0
18 + -1d = 7

Add '-18' to each side of the equation.
18 + -18 + -1d = 7 + -18

Combine like terms: 18 + -18 = 0
0 + -1d = 7 + -18
-1d = 7 + -18

Combine like terms: 7 + -18 = -11
-1d = -11

Divide each side by '-1'.
d = 11

Simplifying
d = 11

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