Resolva as operacoes abaixo, simplificando as fracoes quando possivel
1) 17/42 + 38/42=
2) 5/7 + 3/14=
3) 1/5 - 2/5=
4) 1/0 - -2/5=
5) 10/3• 9/5=
6) 2/3÷ 3/2
1) 17/42 + 38/42=
2) 5/7 + 3/14=
3) 1/5 - 2/5=
4) 1/0 - -2/5=
5) 10/3• 9/5=
6) 2/3÷ 3/2
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R= 55/42
2) 10+3/14
R= 13/14
3) 1-2/5
R= -1/5
4) indefinido.
5) 2x3
R= 6
6) 2/3x 2/3
R= 4/9