Tính nhanh: a)3 2/5 x 1 2/3 – 1 3/4 x 1 1/2 b) 4 1/2 – 2 2/3 + 3 1/2 – 1 1/3 23/07/2021 Bởi Raelynn Tính nhanh: a)3 2/5 x 1 2/3 – 1 3/4 x 1 1/2 b) 4 1/2 – 2 2/3 + 3 1/2 – 1 1/3
a/17/5×5/3-7/4×3/2=85/15-21/8=2720/160-420/160=2300/160=115/8 b/9/2-8/3+7/2-4/3=11/16+13/6=137/48 Bình luận
a/17/5×5/3-7/4×3/2=85/15-21/8=2720/160-420/160=2300/160=115/8
b/9/2-8/3+7/2-4/3=11/16+13/6=137/48