23=2-7d

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Solution for 23=2-7d equation:


Simplifying
23 = 2 + -7d

Solving
23 = 2 + -7d

Solving for variable 'd'.

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

Add '7d' to each side of the equation.
23 + 7d = 2 + -7d + 7d

Combine like terms: -7d + 7d = 0
23 + 7d = 2 + 0
23 + 7d = 2

Add '-23' to each side of the equation.
23 + -23 + 7d = 2 + -23

Combine like terms: 23 + -23 = 0
0 + 7d = 2 + -23
7d = 2 + -23

Combine like terms: 2 + -23 = -21
7d = -21

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

Simplifying
d = -3

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