五年级解方程练习(50 题每题 2 分共 100 分)5 X= 2X- X= 1.5 x=2.25 x = 23 13 43 12 581017 81 = 368(X 43)= 5( 42) X- 157X= 24 ( 42) X-157X= 24 41 3= 61(x-140)70413.2x+9x=33.3 X+12X=500 16a+ 13= 128.65+13-a +16=075 210x= 4 56x 73= x 85x=15 x 76149= 349X=36 X- 15X=20 X 12= 0.6 56x 73=12x= 21 75 210x= 4 5X3 = 54 = 16 10757x 85x=15 x 6 9= 3 5 = 3 20x 53 = 762518x 2513949x 518028x32X= 71 518X= 4 X 41= 203 267x 5235()816x = 4+ 21= 9 85- 3= 5245 1825( 42) X-157X= 24 10.5x+6.5x=51 3(x+3)=50-x+3 12x= 2 524x