2a-4=4a-20

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Solution for 2a-4=4a-20 equation:



2a-4=4a-20
We move all terms to the left:
2a-4-(4a-20)=0
We get rid of parentheses
2a-4a+20-4=0
We add all the numbers together, and all the variables
-2a+16=0
We move all terms containing a to the left, all other terms to the right
-2a=-16
a=-16/-2
a=+8

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