7-d=3

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Solution for 7-d=3 equation: 


Simplifying
7 + -1d = 3

Solving
7 + -1d = 3

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 + -1d = 3 + -7

Combine like terms: 7 + -7 = 0
0 + -1d = 3 + -7
-1d = 3 + -7

Combine like terms: 3 + -7 = -4
-1d = -4

Divide each side by '-1'.
d = 4

Simplifying
d = 4

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