Tính a) 5/ 14 + 16/ 7,.....
Giải thích
514 + 167=514+3214=5+3214=3714
53 − 12=106−36=10−36=76
75 × 1549=7×5×35×7×7=37
4280 : 716=4280×167=7×6×2×88×2×5×7=65
514 + 167=514+3214=5+3214=3714
53 − 12=106−36=10−36=76
75 × 1549=7×5×35×7×7=37
4280 : 716=4280×167=7×6×2×88×2×5×7=65