0.35x+0.30(280-x)=87.5

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Solution for 0.35x+0.30(280-x)=87.5 equation: 



0.35x+0.30(280-x)=87.5

We move all terms to the left:

0.35x+0.30(280-x)-(87.5)=0

We add all the numbers together, and all the variables

0.35x+0.30(-1x+280)-(87.5)=0

We add all the numbers together, and all the variables

0.35x+0.30(-1x+280)-87.5=0

We multiply parentheses

0.35x-0.3x+84-87.5=0

We add all the numbers together, and all the variables

0.05x-3.5=0

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

0.05x=3.5

x=3.5/0.05

x=70

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