6d+3=4d+21

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Solution for 6d+3=4d+21 equation:


Simplifying
6d + 3 = 4d + 21

Reorder the terms:
3 + 6d = 4d + 21

Reorder the terms:
3 + 6d = 21 + 4d

Solving
3 + 6d = 21 + 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
3 + 6d + -4d = 21 + 4d + -4d

Combine like terms: 6d + -4d = 2d
3 + 2d = 21 + 4d + -4d

Combine like terms: 4d + -4d = 0
3 + 2d = 21 + 0
3 + 2d = 21

Add '-3' to each side of the equation.
3 + -3 + 2d = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 2d = 21 + -3
2d = 21 + -3

Combine like terms: 21 + -3 = 18
2d = 18

Divide each side by '2'.
d = 9

Simplifying
d = 9

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