Rút gọn các p/s: A) 2727/4242 B)120120/-240240 C)1515/-1717 Ai lam nhanh minh vote 5star. 09/10/2021 Bởi Genesis Rút gọn các p/s: A) 2727/4242 B)120120/-240240 C)1515/-1717 Ai lam nhanh minh vote 5star.
`A) 2727/4242=(2727:101:3)/(4242:101:3)=9/14` `B)120120/-240240=- 120120/240240=-120120/(120120.2) =(-1)/2` `C)1515/-1717=- (1515:101)/(1717:101)=(-15)/17` Bình luận
a) $\frac{2727}{4242}$= $\frac{2727:303}{4242:303}$ =$\frac{9}{14}$ b) $\frac{120120}{-240240}$ = $\frac{120120:120120}{-240240:120120}$ = $\frac{1}{-2}$ = $\frac{-1}{2}$ c) $\frac{1515}{-1717}$ = $\frac{1515:(-101)}{-1717:(-101)}$ = $\frac{-15}{17}$ Chúc bạn học tốt Bình luận
`A) 2727/4242=(2727:101:3)/(4242:101:3)=9/14`
`B)120120/-240240=- 120120/240240=-120120/(120120.2) =(-1)/2`
`C)1515/-1717=- (1515:101)/(1717:101)=(-15)/17`
a) $\frac{2727}{4242}$= $\frac{2727:303}{4242:303}$ =$\frac{9}{14}$
b) $\frac{120120}{-240240}$ = $\frac{120120:120120}{-240240:120120}$ = $\frac{1}{-2}$ = $\frac{-1}{2}$
c) $\frac{1515}{-1717}$ = $\frac{1515:(-101)}{-1717:(-101)}$ = $\frac{-15}{17}$
Chúc bạn học tốt