0.07x+0.09(100-x)=8

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Solution for 0.07x+0.09(100-x)=8 equation: 



0.07x+0.09(100-x)=8

We move all terms to the left:

0.07x+0.09(100-x)-(8)=0

We add all the numbers together, and all the variables

0.07x+0.09(-1x+100)-8=0

We multiply parentheses

0.07x-0.09x+9-8=0

We add all the numbers together, and all the variables

-0.02x+1=0

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

-0.02x=-1

x=-1/-0.02

x=+50

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