[5-2d]=7

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Solution for [5-2d]=7 equation: 


Simplifying
[5 + -2d] = 7

Remove brackets around [5 + -2d]
5 + -2d = 7

Solving
5 + -2d = 7

Solving for variable 'd'.

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

Add '-5' to each side of the equation.
5 + -5 + -2d = 7 + -5

Combine like terms: 5 + -5 = 0
0 + -2d = 7 + -5
-2d = 7 + -5

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

Divide each side by '-2'.
d = -1

Simplifying
d = -1

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