Toán Tính nhanh 2009×2010+2000/ 2011×2010-2020 10/09/2021 By Abigail Tính nhanh 2009×2010+2000/ 2011×2010-2020
$\frac{2009 x 2010 + 2000}{2011×2010-2020}$=$\frac{2009×2010+2000}{2009×2010+2×2010-2020}$ =$\frac{2000}{4020-2020}$ =$\frac{2000}{2000}$ =1 Trả lời
2009×2010+2000/ 2011×2010-2020 ⇒2010×2010 +2000 – 2010/2010×2010 – 2020 +2010 ⇒2010×2010 -10/2010×2010-10 ⇒ 1 CHÚC EM HỌC TỐT!!! Trả lời
$\frac{2009 x 2010 + 2000}{2011×2010-2020}$=$\frac{2009×2010+2000}{2009×2010+2×2010-2020}$ =$\frac{2000}{4020-2020}$ =$\frac{2000}{2000}$ =1
2009×2010+2000/ 2011×2010-2020
⇒2010×2010 +2000 – 2010/2010×2010 – 2020 +2010
⇒2010×2010 -10/2010×2010-10
⇒ 1
CHÚC EM HỌC TỐT!!!