Toán Lớp 5: ‘2/3 + 7/15 – 3/5’
nhanh ạ=))))))))))
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Toán Lớp 5: ‘2/3 + 7/15 – 3/5’
nhanh ạ=))))))))))
Comments ( 2 )
2/3 + 7/15 – 3/5
= ( 2/3 + 7/15 ) – 3/5
= ( 10/15 + 7/15 ) – 3/5
= 17/15 – 9/15
= 8/15
$\frac{2}{3}$ + $\frac{7}{15}$ – $\frac{3}{5}$
= $\frac{10}{15}$ + $\frac{7}{15}$ – $\frac{9}{15}$
= $\frac{17}{15}$ – $\frac{9}{15}$
= $\frac{8}{15}$