6d+3=8d-21

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Solution for 6d+3=8d-21 equation:


Simplifying
6d + 3 = 8d + -21

Reorder the terms:
3 + 6d = 8d + -21

Reorder the terms:
3 + 6d = -21 + 8d

Solving
3 + 6d = -21 + 8d

Solving for variable 'd'.

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

Add '-8d' to each side of the equation.
3 + 6d + -8d = -21 + 8d + -8d

Combine like terms: 6d + -8d = -2d
3 + -2d = -21 + 8d + -8d

Combine like terms: 8d + -8d = 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 = -24
-2d = -24

Divide each side by '-2'.
d = 12

Simplifying
d = 12

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