-9=7-d

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Solution for -9=7-d equation:


Simplifying
-9 = 7 + -1d

Solving
-9 = 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.
-9 + d = 7 + -1d + d

Combine like terms: -1d + d = 0
-9 + d = 7 + 0
-9 + d = 7

Add '9' to each side of the equation.
-9 + 9 + d = 7 + 9

Combine like terms: -9 + 9 = 0
0 + d = 7 + 9
d = 7 + 9

Combine like terms: 7 + 9 = 16
d = 16

Simplifying
d = 16

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