3d+2s=21

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Solution for 3d+2s=21 equation: 


Simplifying
3d + 2s = 21

Solving
3d + 2s = 21

Solving for variable 'd'.

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

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

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

Divide each side by '3'.
d = 7 + -0.6666666667s

Simplifying
d = 7 + -0.6666666667s

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