100+21x-5=180

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Solution for 100+21x-5=180 equation: 



100+21x-5=180

We move all terms to the left:

100+21x-5-(180)=0

We add all the numbers together, and all the variables

21x-85=0

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

21x=85

x=85/21

x=4+1/21

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