-1(20+d)=

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Solution for -1(20+d)= equation: 


Simplifying
-1(20 + d) = 0
(20 * -1 + d * -1) = 0
(-20 + -1d) = 0

Solving
-20 + -1d = 0

Solving for variable 'd'.

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

Add '20' to each side of the equation.
-20 + 20 + -1d = 0 + 20

Combine like terms: -20 + 20 = 0
0 + -1d = 0 + 20
-1d = 0 + 20

Combine like terms: 0 + 20 = 20
-1d = 20

Divide each side by '-1'.
d = -20

Simplifying
d = -20

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