Tính nhanh (8$\frac{5}{11}$+ 19$\frac{4}{13}$ ) – (9$\frac{4}{13}$ – 1$\frac{6}{11}$ ) 06/10/2021 Bởi Jade Tính nhanh (8$\frac{5}{11}$+ 19$\frac{4}{13}$ ) – (9$\frac{4}{13}$ – 1$\frac{6}{11}$ )
$(8\frac{5}{11} + 19\frac{4}{13}) – (9\frac{4}{13} – 1\frac{6}{11})$ = $(\frac{93}{11} + \frac{251}{13}) – (\frac{121}{13} – \frac{17}{11})$ = $\frac{93}{11} + \frac{251}{13} – \frac{121}{13} + \frac{17}{11}$ = $\frac{93}{11} + \frac{251}{13} + \frac{-121}{13} + \frac{17}{11}$ = $(\frac{251}{13} + \frac{-121}{13}) + (\frac{93}{11} + \frac{17}{11})$ = 10 + 10 = 20 Cho mk câu trả lời hay nhất nhé bạn Bình luận
= 8 5/11 +19 4/13 – 9 4/13 + 1 6/11 =(8 5/11 + 1 6/11) + (19 4/13 – 9 4/13) =(93/11 + 17/11) + 10 =10 +10 =20 Bình luận
$(8\frac{5}{11} + 19\frac{4}{13}) – (9\frac{4}{13} – 1\frac{6}{11})$
= $(\frac{93}{11} + \frac{251}{13}) – (\frac{121}{13} – \frac{17}{11})$
= $\frac{93}{11} + \frac{251}{13} – \frac{121}{13} + \frac{17}{11}$
= $\frac{93}{11} + \frac{251}{13} + \frac{-121}{13} + \frac{17}{11}$
= $(\frac{251}{13} + \frac{-121}{13}) + (\frac{93}{11} + \frac{17}{11})$
= 10 + 10
= 20
Cho mk câu trả lời hay nhất nhé bạn
= 8 5/11 +19 4/13 – 9 4/13 + 1 6/11
=(8 5/11 + 1 6/11) + (19 4/13 – 9 4/13)
=(93/11 + 17/11) + 10
=10 +10
=20