20乘1.34
20乘1.34-4.92除以2.4要简便方法怎么算
34X2除以2+23 5X3+4除以2= 45除以15X4-3= ( 68-35)除以11+25= 7+(11+44)除以5= 45除以( 7+8)X2 2+4X4除以3 = ( 65除以5+3)= 除以4 = 20除以5+1 =(47+2)除以7 = 57除以3+4= 72X3-4 = 79X2+1 = 27-2X4 = 68-7X5 = 77除以11+6= 92