d-10=2d+9

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Solution for d-10=2d+9 equation:


Simplifying
d + -10 = 2d + 9

Reorder the terms:
-10 + d = 2d + 9

Reorder the terms:
-10 + d = 9 + 2d

Solving
-10 + d = 9 + 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
-10 + d + -2d = 9 + 2d + -2d

Combine like terms: d + -2d = -1d
-10 + -1d = 9 + 2d + -2d

Combine like terms: 2d + -2d = 0
-10 + -1d = 9 + 0
-10 + -1d = 9

Add '10' to each side of the equation.
-10 + 10 + -1d = 9 + 10

Combine like terms: -10 + 10 = 0
0 + -1d = 9 + 10
-1d = 9 + 10

Combine like terms: 9 + 10 = 19
-1d = 19

Divide each side by '-1'.
d = -19

Simplifying
d = -19

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