18-7d=-8(5d+9)

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Solution for 18-7d=-8(5d+9) equation:


Simplifying
18 + -7d = -8(5d + 9)

Reorder the terms:
18 + -7d = -8(9 + 5d)
18 + -7d = (9 * -8 + 5d * -8)
18 + -7d = (-72 + -40d)

Solving
18 + -7d = -72 + -40d

Solving for variable 'd'.

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

Add '40d' to each side of the equation.
18 + -7d + 40d = -72 + -40d + 40d

Combine like terms: -7d + 40d = 33d
18 + 33d = -72 + -40d + 40d

Combine like terms: -40d + 40d = 0
18 + 33d = -72 + 0
18 + 33d = -72

Add '-18' to each side of the equation.
18 + -18 + 33d = -72 + -18

Combine like terms: 18 + -18 = 0
0 + 33d = -72 + -18
33d = -72 + -18

Combine like terms: -72 + -18 = -90
33d = -90

Divide each side by '33'.
d = -2.727272727

Simplifying
d = -2.727272727

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