Respostas
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a) x/ax+bx -> x/x(a+b) = 1/a+b
b) 5xy+5y/10xy -> 5y(x+1)/5y(2x) -> x+1/2x
c) 6y-8/12xy-16x -> 2(3y-4)/2(6xy-8x) -> 3y-4/6xy-8x -> 3y-4/2x(3y-4) -> 1/2x
b) 5xy+5y/10xy -> 5y(x+1)/5y(2x) -> x+1/2x
c) 6y-8/12xy-16x -> 2(3y-4)/2(6xy-8x) -> 3y-4/6xy-8x -> 3y-4/2x(3y-4) -> 1/2x
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