解:6÷2/3+4÷1/3等于( 21 ) ∵已知需求出6÷2/3+4÷1/3等于多少 ∴6 ÷ 2/3 + 4 ÷ 1/3 = 6 × 3/2 + 4 × 3 = 6 × 1/2 × 3 + 4 × 3 = 3 × 3 + 4 × 3 = 3 × (3 + 4) = 3 × 7 = 21 答:6÷2/3+4÷1/3等于21
这道题直接计算就很简便原式=6×3/2+4×3=9+12=21