5=7-d

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Solution for 5=7-d equation:


Simplifying
5 = 7 + -1d

Solving
5 = 7 + -1d

Solving for variable 'd'.

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

Add 'd' to each side of the equation.
5 + d = 7 + -1d + d

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

Add '-5' to each side of the equation.
5 + -5 + d = 7 + -5

Combine like terms: 5 + -5 = 0
0 + d = 7 + -5
d = 7 + -5

Combine like terms: 7 + -5 = 2
d = 2

Simplifying
d = 2

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