4d-(7d-9)=12

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Solution for 4d-(7d-9)=12 equation:



4d-(7d-9)=12
We move all terms to the left:
4d-(7d-9)-(12)=0
We get rid of parentheses
4d-7d+9-12=0
We add all the numbers together, and all the variables
-3d-3=0
We move all terms containing d to the left, all other terms to the right
-3d=3
d=3/-3
d=-1

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