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3(x+13)+19=4
We move all terms to the left:
3(x+13)+19-(4)=0
We add all the numbers together, and all the variables
3(x+13)+15=0
We multiply parentheses
3x+39+15=0
We add all the numbers together, and all the variables
3x+54=0
We move all terms containing x to the left, all other terms to the right
3x=-54
x=-54/3
x=-18
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