11-7a=20

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Solution for 11-7a=20 equation: 



11-7a=20

We move all terms to the left:

11-7a-(20)=0

We add all the numbers together, and all the variables

-7a-9=0

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

-7a=9

a=9/-7

a=-1+2/7

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