8d-9d+4=13

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Solution for 8d-9d+4=13 equation:


Simplifying
8d + -9d + 4 = 13

Reorder the terms:
4 + 8d + -9d = 13

Combine like terms: 8d + -9d = -1d
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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