tinh nhanh 2/5+7/2+7/8+8/5+12/13+1/8+1/2+27/13 09/09/2021 Bởi Serenity tinh nhanh 2/5+7/2+7/8+8/5+12/13+1/8+1/2+27/13
Đáp án: 10 Giải thích các bước giải: \(\begin{array}{l}\frac{2}{5} + \frac{7}{2} + \frac{7}{8} + \frac{8}{5} + \frac{{12}}{{13}} + \frac{1}{8} + \frac{1}{2} + \frac{{27}}{{13}}\\ = \left( {\frac{2}{5} + \frac{8}{5}} \right) + \left( {\frac{7}{8} + \frac{1}{8}} \right) + \left( {\frac{7}{2} + \frac{1}{2}} \right) + \left( {\frac{{12}}{{13}} + \frac{{27}}{{13}}} \right)\\ = \,\,\,\,\,\,2\,\,\,\,\,\,\,\,\,\,\, + \,\,\,\,\,\,\,\,1\,\,\,\,\,\,\,\,\, + \,\,\,\,\,\,\,\,\,4\,\,\,\,\,\,\,\, + \,\,\,\,\,\,\,\,\,\,\,3\\ = \,\,\,\,\,10\end{array}\) Bình luận
Đáp án: là 10 Các bước giải: (2/5 + 8/5) + (1/8 + 7/8) + (12/13 +27/13 ) + (7/2 + 1/2) = 2 + 1 + 3 + 4 = 10 Bình luận
Đáp án:
10
Giải thích các bước giải:
\(\begin{array}{l}\frac{2}{5} + \frac{7}{2} + \frac{7}{8} + \frac{8}{5} + \frac{{12}}{{13}} + \frac{1}{8} + \frac{1}{2} + \frac{{27}}{{13}}\\ = \left( {\frac{2}{5} + \frac{8}{5}} \right) + \left( {\frac{7}{8} + \frac{1}{8}} \right) + \left( {\frac{7}{2} + \frac{1}{2}} \right) + \left( {\frac{{12}}{{13}} + \frac{{27}}{{13}}} \right)\\ = \,\,\,\,\,\,2\,\,\,\,\,\,\,\,\,\,\, + \,\,\,\,\,\,\,\,1\,\,\,\,\,\,\,\,\, + \,\,\,\,\,\,\,\,\,4\,\,\,\,\,\,\,\, + \,\,\,\,\,\,\,\,\,\,\,3\\ = \,\,\,\,\,10\end{array}\)
Đáp án: là 10
Các bước giải:
(2/5 + 8/5) + (1/8 + 7/8) + (12/13 +27/13 ) + (7/2 + 1/2)
= 2 + 1 + 3 + 4
= 10