faça as operações das frações a) (3/7)+(2/3) b)(2/5)+(1/6)+(2/3) c) (6/9)-(3/9)+(1/3)
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Olá...
a)
(3/7) + (2/3)
3/7 + 2/3==>mmc = 21
9 + 14/21
23/21
b)
(2/5) + (1/6) + (2/3)
2/5 + 1/6 + 2/3==>mmc = 30
12 + 5 + 20/30
37/30
c)
(6/9) - (3/9) + (1/3)
6/9 - 3/9 + 1/3
6/9 - 1/3 + 1/3
6/9 + 0
6/9 ÷ 3
2/3
Bons estudos.
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