-80+90c=140-20c

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Solution for -80+90c=140-20c equation: 



-80+90c=140-20c

We move all terms to the left:

-80+90c-(140-20c)=0

We add all the numbers together, and all the variables

90c-(-20c+140)-80=0

We get rid of parentheses

90c+20c-140-80=0

We add all the numbers together, and all the variables

110c-220=0

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

110c=220

c=220/110

c=2

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