3(d-4)=9

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Solution for 3(d-4)=9 equation: 


Simplifying
3(d + -4) = 9

Reorder the terms:
3(-4 + d) = 9
(-4 * 3 + d * 3) = 9
(-12 + 3d) = 9

Solving
-12 + 3d = 9

Solving for variable 'd'.

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

Add '12' to each side of the equation.
-12 + 12 + 3d = 9 + 12

Combine like terms: -12 + 12 = 0
0 + 3d = 9 + 12
3d = 9 + 12

Combine like terms: 9 + 12 = 21
3d = 21

Divide each side by '3'.
d = 7

Simplifying
d = 7

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