8d+9=10d-13

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Solution for 8d+9=10d-13 equation:


Simplifying
8d + 9 = 10d + -13

Reorder the terms:
9 + 8d = 10d + -13

Reorder the terms:
9 + 8d = -13 + 10d

Solving
9 + 8d = -13 + 10d

Solving for variable 'd'.

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

Add '-10d' to each side of the equation.
9 + 8d + -10d = -13 + 10d + -10d

Combine like terms: 8d + -10d = -2d
9 + -2d = -13 + 10d + -10d

Combine like terms: 10d + -10d = 0
9 + -2d = -13 + 0
9 + -2d = -13

Add '-9' to each side of the equation.
9 + -9 + -2d = -13 + -9

Combine like terms: 9 + -9 = 0
0 + -2d = -13 + -9
-2d = -13 + -9

Combine like terms: -13 + -9 = -22
-2d = -22

Divide each side by '-2'.
d = 11

Simplifying
d = 11

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