0.75x+0.2(80-x)=20

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Solution for 0.75x+0.2(80-x)=20 equation: 



0.75x+0.2(80-x)=20

We move all terms to the left:

0.75x+0.2(80-x)-(20)=0

We add all the numbers together, and all the variables

0.75x+0.2(-1x+80)-20=0

We multiply parentheses

0.75x-0.2x+16-20=0

We add all the numbers together, and all the variables

0.55x-4=0

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

0.55x=4

x=4/0.55

x=7+0.15/0.55

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