Tính hợp lí: 10/17 -5/13+7/17-8/13
Giải thích
a)1017−513+717−813=1017+717+−513+−813=0
b)3051−2052+1434−5691−2=1017−513+717−813−2=−2c)−103+1310−16+710=1310+710+−103+−16=2−72=−32d)1−206+3930−424+424=1−103+1310−16+710=−12
a)1017−513+717−813=1017+717+−513+−813=0
b)3051−2052+1434−5691−2=1017−513+717−813−2=−2c)−103+1310−16+710=1310+710+−103+−16=2−72=−32d)1−206+3930−424+424=1−103+1310−16+710=−12