-9(5.5+2d)=22.5

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Solution for -9(5.5+2d)=22.5 equation: 


Simplifying
-9(5.5 + 2d) = 22.5
(5.5 * -9 + 2d * -9) = 22.5
(-49.5 + -18d) = 22.5

Solving
-49.5 + -18d = 22.5

Solving for variable 'd'.

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

Add '49.5' to each side of the equation.
-49.5 + 49.5 + -18d = 22.5 + 49.5

Combine like terms: -49.5 + 49.5 = 0.0
0.0 + -18d = 22.5 + 49.5
-18d = 22.5 + 49.5

Combine like terms: 22.5 + 49.5 = 72
-18d = 72

Divide each side by '-18'.
d = -4

Simplifying
d = -4

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