21x+3d=45

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Solution for 21x+3d=45 equation: 


Simplifying
21x + 3d = 45

Reorder the terms:
3d + 21x = 45

Solving
3d + 21x = 45

Solving for variable 'd'.

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

Add '-21x' to each side of the equation.
3d + 21x + -21x = 45 + -21x

Combine like terms: 21x + -21x = 0
3d + 0 = 45 + -21x
3d = 45 + -21x

Divide each side by '3'.
d = 15 + -7x

Simplifying
d = 15 + -7x

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