3.5x-81=1.8x+4

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Solution for 3.5x-81=1.8x+4 equation: 



3.5x-81=1.8x+4

We move all terms to the left:

3.5x-81-(1.8x+4)=0

We get rid of parentheses

3.5x-1.8x-4-81=0

We add all the numbers together, and all the variables

1.7x-85=0

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

1.7x=85

x=85/1.7

x=50

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