Tính nhanh a) 5/16 - 7/13 - 3/16 + -6/13 b) -5/12 -(3/4 + 7/12 - 2/8)
Giải thích
a) 516−713−316+−613=516−316+−713+−613=18+−1=−78
b) −512−34+712−28=−512−34−712+28=−512−712+−34+28=−1+−12=−32
a) 516−713−316+−613=516−316+−713+−613=18+−1=−78
b) −512−34+712−28=−512−34−712+28=−512−712+−34+28=−1+−12=−32