12.9=5.7+3d

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Solution for 12.9=5.7+3d equation: 


Simplifying
12.9 = 5.7 + 3d

Solving
12.9 = 5.7 + 3d

Solving for variable 'd'.

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

Add '-3d' to each side of the equation.
12.9 + -3d = 5.7 + 3d + -3d

Combine like terms: 3d + -3d = 0
12.9 + -3d = 5.7 + 0
12.9 + -3d = 5.7

Add '-12.9' to each side of the equation.
12.9 + -12.9 + -3d = 5.7 + -12.9

Combine like terms: 12.9 + -12.9 = 0.0
0.0 + -3d = 5.7 + -12.9
-3d = 5.7 + -12.9

Combine like terms: 5.7 + -12.9 = -7.2
-3d = -7.2

Divide each side by '-3'.
d = 2.4

Simplifying
d = 2.4

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