.15d+0.07(1000-d)=130

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Solution for .15d+0.07(1000-d)=130 equation: 



.15d+0.07(1000-d)=130

We move all terms to the left:

.15d+0.07(1000-d)-(130)=0

We add all the numbers together, and all the variables

.15d+0.07(-1d+1000)-130=0

We multiply parentheses

.15d-0.07d+70-130=0

We add all the numbers together, and all the variables

0.08d-60=0

We move all terms containing d to the left, all other terms to the right

0.08d=60

d=60/0.08

d=750

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