-4a-20=-6a-42

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Solution for -4a-20=-6a-42 equation: 



-4a-20=-6a-42

We move all terms to the left:

-4a-20-(-6a-42)=0

We get rid of parentheses

-4a+6a+42-20=0

We add all the numbers together, and all the variables

2a+22=0

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

2a=-22

a=-22/2

a=-11

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