20a-40=8a+200

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Solution for 20a-40=8a+200 equation: 



20a-40=8a+200

We move all terms to the left:

20a-40-(8a+200)=0

We get rid of parentheses

20a-8a-200-40=0

We add all the numbers together, and all the variables

12a-240=0

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

12a=240

a=240/12

a=20

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