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5(30-d)+10d=2.60
We move all terms to the left:
5(30-d)+10d-(2.60)=0
We add all the numbers together, and all the variables
5(-1d+30)+10d-(2.6)=0
We add all the numbers together, and all the variables
10d+5(-1d+30)-2.6=0
We multiply parentheses
10d-5d+150-2.6=0
We add all the numbers together, and all the variables
5d+147.4=0
We move all terms containing d to the left, all other terms to the right
5d=-147.4
d=-147.4/5
d=-29+2.4/5
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