3a+50=100+2a+20

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Solution for 3a+50=100+2a+20 equation: 



3a+50=100+2a+20

We move all terms to the left:

3a+50-(100+2a+20)=0

We add all the numbers together, and all the variables

3a-(2a+120)+50=0

We get rid of parentheses

3a-2a-120+50=0

We add all the numbers together, and all the variables

a-70=0

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

a=70

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