Verified Answer :

awesomesauceaid

the answer is 13 move over the constants and divided by 3

1st: subtract 20 from both sides: 3x-4+20-20=55-20
2nd: simplify: 3x-4=35
3rd: add 4 to both sides: 3x-4+4=35+4
4th: divide 3 from both sides: 3x/3=39/3
5th: x=13

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