-1(d-4)=13

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Solution for -1(d-4)=13 equation: 


Simplifying
-1(d + -4) = 13

Reorder the terms:
-1(-4 + d) = 13
(-4 * -1 + d * -1) = 13
(4 + -1d) = 13

Solving
4 + -1d = 13

Solving for variable 'd'.

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

Add '-4' to each side of the equation.
4 + -4 + -1d = 13 + -4

Combine like terms: 4 + -4 = 0
0 + -1d = 13 + -4
-1d = 13 + -4

Combine like terms: 13 + -4 = 9
-1d = 9

Divide each side by '-1'.
d = -9

Simplifying
d = -9

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