4-3x÷5+7-x÷3+13÷3=0
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4-3x/5+7-x/3=-13/3
3(4-3x)+5(7-x)/15=-13/3
12-9x+35-5x=-13*5
47-14x=-65
14x=47+65
14x=112
x=112/14
x=8
3(4-3x)+5(7-x)/15=-13/3
12-9x+35-5x=-13*5
47-14x=-65
14x=47+65
14x=112
x=112/14
x=8
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