10d-3d=20+1

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Solution for 10d-3d=20+1 equation: 


Simplifying
10d + -3d = 20 + 1

Combine like terms: 10d + -3d = 7d
7d = 20 + 1

Combine like terms: 20 + 1 = 21
7d = 21

Solving
7d = 21

Solving for variable 'd'.

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

Divide each side by '7'.
d = 3

Simplifying
d = 3

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