3(3-4d)=57

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Solution for 3(3-4d)=57 equation: 


Simplifying
3(3 + -4d) = 57
(3 * 3 + -4d * 3) = 57
(9 + -12d) = 57

Solving
9 + -12d = 57

Solving for variable 'd'.

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

Add '-9' to each side of the equation.
9 + -9 + -12d = 57 + -9

Combine like terms: 9 + -9 = 0
0 + -12d = 57 + -9
-12d = 57 + -9

Combine like terms: 57 + -9 = 48
-12d = 48

Divide each side by '-12'.
d = -4

Simplifying
d = -4

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