怎样算简便就怎样算 她 10 × 1 s + 3 10 ÷s&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p; 图 23 ÷[ e 3 ×( 她 1s - 1 e )] 2e× 5 她 × 她 12 &nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p;&nb5p; ( 2 3 + 1 s )×2e.