Tính hợp lí: a) -10/3 + 13/10 - 1/6 + 7/10 b) 1 - 20/6 + 39/30 - 4/24 + 35/50
Giải thích
a)−103+1310−16+710=1310+710+−103+−16=2−72=−32
b)1−206+3930−424+424=1−103+1310−16+710=−12
a)−103+1310−16+710=1310+710+−103+−16=2−72=−32
b)1−206+3930−424+424=1−103+1310−16+710=−12