7-3d=28

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Solution for 7-3d=28 equation: 


Simplifying
7 + -3d = 28

Solving
7 + -3d = 28

Solving for variable 'd'.

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

Add '-7' to each side of the equation.
7 + -7 + -3d = 28 + -7

Combine like terms: 7 + -7 = 0
0 + -3d = 28 + -7
-3d = 28 + -7

Combine like terms: 28 + -7 = 21
-3d = 21

Divide each side by '-3'.
d = -7

Simplifying
d = -7

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