21x-40=180

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Solution for 21x-40=180 equation: 



21x-40=180

We move all terms to the left:

21x-40-(180)=0

We add all the numbers together, and all the variables

21x-220=0

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

21x=220

x=220/21

x=10+10/21

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