20d-13-12d=-43

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Solution for 20d-13-12d=-43 equation:


Simplifying
20d + -13 + -12d = -43

Reorder the terms:
-13 + 20d + -12d = -43

Combine like terms: 20d + -12d = 8d
-13 + 8d = -43

Solving
-13 + 8d = -43

Solving for variable 'd'.

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

Add '13' to each side of the equation.
-13 + 13 + 8d = -43 + 13

Combine like terms: -13 + 13 = 0
0 + 8d = -43 + 13
8d = -43 + 13

Combine like terms: -43 + 13 = -30
8d = -30

Divide each side by '8'.
d = -3.75

Simplifying
d = -3.75

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