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2.9(d-5)-4=4.7
We move all terms to the left:
2.9(d-5)-4-(4.7)=0
We add all the numbers together, and all the variables
2.9(d-5)-8.7=0
We multiply parentheses
2.9d-14.5-8.7=0
We add all the numbers together, and all the variables
2.9d-23.2=0
We move all terms containing d to the left, all other terms to the right
2.9d=23.2
d=23.2/2.9
d=8
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