7l-11=3l+9

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Solution for 7l-11=3l+9 equation: 



7l-11=3l+9

We move all terms to the left:

7l-11-(3l+9)=0

We get rid of parentheses

7l-3l-9-11=0

We add all the numbers together, and all the variables

4l-20=0

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

4l=20

l=20/4

l=5

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