-2(d+9)=20

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Solution for -2(d+9)=20 equation: 


Simplifying
-2(d + 9) = 20

Reorder the terms:
-2(9 + d) = 20
(9 * -2 + d * -2) = 20
(-18 + -2d) = 20

Solving
-18 + -2d = 20

Solving for variable 'd'.

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

Add '18' to each side of the equation.
-18 + 18 + -2d = 20 + 18

Combine like terms: -18 + 18 = 0
0 + -2d = 20 + 18
-2d = 20 + 18

Combine like terms: 20 + 18 = 38
-2d = 38

Divide each side by '-2'.
d = -19

Simplifying
d = -19

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