.20x+.35(-x+30)=7.50

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Solution for .20x+.35(-x+30)=7.50 equation: 



.20x+.35(-x+30)=7.50

We move all terms to the left:

.20x+.35(-x+30)-(7.50)=0

We add all the numbers together, and all the variables

.20x+.35(-1x+30)-(7.5)=0

We add all the numbers together, and all the variables

.20x+.35(-1x+30)-7.5=0

We multiply parentheses

.20x-0.35x+10.5-7.5=0

We add all the numbers together, and all the variables

-0.15x+3=0

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

-0.15x=-3

x=-3/-0.15

x=+20

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