21/17+-5/19+-14-4/17 -5/7.2/11+-5/7.9/11+5/7 Aii làm cho mìn diii Sẽ vote cho 5⭐️ nhoá 10/08/2021 Bởi Hadley 21/17+-5/19+-14-4/17 -5/7.2/11+-5/7.9/11+5/7 Aii làm cho mìn diii Sẽ vote cho 5⭐️ nhoá
Đáp án: `21/17+ – 5/19+ – 14/19-4/17=(21/17-4/17)-(5/19+14/19)=1-1=0``-5/7. 2/11+ -5/7. 9/11+5/7=-5/7(2/11+9/11-1)=-5/7(1-1)=0` Bình luận
Đáp án:
`21/17+ – 5/19+ – 14/19-4/17=(21/17-4/17)-(5/19+14/19)=1-1=0`
`-5/7. 2/11+ -5/7. 9/11+5/7=-5/7(2/11+9/11-1)=-5/7(1-1)=0`