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3(19+x)-30=16+6x
We move all terms to the left:
3(19+x)-30-(16+6x)=0
We add all the numbers together, and all the variables
3(x+19)-(6x+16)-30=0
We multiply parentheses
3x-(6x+16)+57-30=0
We get rid of parentheses
3x-6x-16+57-30=0
We add all the numbers together, and all the variables
-3x+11=0
We move all terms containing x to the left, all other terms to the right
-3x=-11
x=-11/-3
x=3+2/3
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