7.9+d=12

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Solution for 7.9+d=12 equation: 


Simplifying
7.9 + d = 12

Solving
7.9 + d = 12

Solving for variable 'd'.

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

Add '-7.9' to each side of the equation.
7.9 + -7.9 + d = 12 + -7.9

Combine like terms: 7.9 + -7.9 = 0.0
0.0 + d = 12 + -7.9
d = 12 + -7.9

Combine like terms: 12 + -7.9 = 4.1
d = 4.1

Simplifying
d = 4.1

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