-18=9(d+1)

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Solution for -18=9(d+1) equation:


Simplifying
-18 = 9(d + 1)

Reorder the terms:
-18 = 9(1 + d)
-18 = (1 * 9 + d * 9)
-18 = (9 + 9d)

Solving
-18 = 9 + 9d

Solving for variable 'd'.

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

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

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

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

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

Combine like terms: 9 + 18 = 27
-9d = 27

Divide each side by '-9'.
d = -3

Simplifying
d = -3

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