=-3/7+15/26-2/13+3/7=15/26-2/13=15/26-4/26=11/26
=-3/7+15/26-2/13+3/7=15/26-2/13=15/26-4/26=11/26
Tính nhanh:
a. -3/7+15/26-(2/13-3/7)
b.2*3/7+(2/9-10/7)-5/3: 1/9
Tính nhanh:-3/7 +15/26-(2/13-3/7
Tính hợp lý(nếu có thể)
-3/7+15/26+(-2/13+3/7)46/13.
/giúp mình nha mn/
4.24.5^2-(3^3.18+3^3.12)
31.15.7^2.4-31.49.40
1+2+3+4+5+6+7+8+9+10
1+3+5+7+9+11+13+15+19
2+6+10+14+22+23+26+34
5+8+11+14+17+20+23+26+29
1+6+11+16+21+26+31+36+41+47+51
10+13+16+19+22+25+28+31+34+37+40
5+7+9+11+13+15+17+3+8+13+18+23+28
4+7+10+13+16+19+5+9+13+17+21+25
A ,26/15+-7/13+-6/13-11/15 B, -3/4+4/13+-3/4×9/13+3/4 Hộ tui
|(5-7)2-26|-315.3:313
a, -3/7 + 15/26 - 2/13 + 3/7
b,2.3/7 - 5/3 : 1/9 - 3/7
giúp em vs ạ đề là thực hiện phép tính
\(\frac{-3}{7}+\frac{15}{26}-\left(\frac{2}{13}-\frac{3}{7}\right)\)