-9(d+2)=4(15+d)

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Solution for -9(d+2)=4(15+d) equation:


Simplifying
-9(d + 2) = 4(15 + d)

Reorder the terms:
-9(2 + d) = 4(15 + d)
(2 * -9 + d * -9) = 4(15 + d)
(-18 + -9d) = 4(15 + d)
-18 + -9d = (15 * 4 + d * 4)
-18 + -9d = (60 + 4d)

Solving
-18 + -9d = 60 + 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
-18 + -9d + -4d = 60 + 4d + -4d

Combine like terms: -9d + -4d = -13d
-18 + -13d = 60 + 4d + -4d

Combine like terms: 4d + -4d = 0
-18 + -13d = 60 + 0
-18 + -13d = 60

Add '18' to each side of the equation.
-18 + 18 + -13d = 60 + 18

Combine like terms: -18 + 18 = 0
0 + -13d = 60 + 18
-13d = 60 + 18

Combine like terms: 60 + 18 = 78
-13d = 78

Divide each side by '-13'.
d = -6

Simplifying
d = -6

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