10d+9=9d+13

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


Simplifying
10d + 9 = 9d + 13

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

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

Solving
9 + 10d = 13 + 9d

Solving for variable 'd'.

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

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

Combine like terms: 10d + -9d = 1d
9 + 1d = 13 + 9d + -9d

Combine like terms: 9d + -9d = 0
9 + 1d = 13 + 0
9 + 1d = 13

Add '-9' to each side of the equation.
9 + -9 + 1d = 13 + -9

Combine like terms: 9 + -9 = 0
0 + 1d = 13 + -9
1d = 13 + -9

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

Divide each side by '1'.
d = 4

Simplifying
d = 4

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