2.4/1 24/31*4.125-(9 5/31-4.42)
2.4/1又24分之31x4.125-(18又5分之37-13.42)=?
1.简算题32×31/6-31/6(64/4×6/5+24/5×3/1)/8/5+9/85/3*8+60%*71+0.6
(-1/4-31/80)+(7/24+9/40)
科学 (5 14:31:24)
1,1,1,3,5,9,17,31,57,.
1,2,3,3,7,5,15,9,31,( )
规律 1 3 5 9 17 31 51 ( )
数字推理1,3,5,9,17,31,57,()详解
1,3,5,9,17,31,57,( )
解方程 6乘9-2/1x=5/24 7x+6x=31 0.7x-5=3/5 x170乘100%=85%
24.已知1+2+3+…+31+32+33==17×33 求 1-3+2-6+3-9+4-12+…+31-93+32-9
31