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29.30=9(2)+4.40+d
We move all terms to the left:
29.30-(9(2)+4.40+d)=0
We add all the numbers together, and all the variables
-(d+96.4)+29.30=0
We add all the numbers together, and all the variables
-(d+96.4)+29.3=0
We get rid of parentheses
-d-96.4+29.3=0
We add all the numbers together, and all the variables
-1d-67.1=0
We move all terms containing d to the left, all other terms to the right
-d=67.1
d=67.1/-1
d=-67+0.099999999999994/1
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