小学四年级下册解方程练习题5X=4 14X-8X=15+2X=420X-50=50 28+6X=82-22X=10 4-3X=10X=60 99X=100-X 4y+2=6 2x-8=8 x+5=7 56x-50x=30 5x+5=15 X+3=18x+32=764x-3*9=29x+3=10 x=19x-9=80X-6=123x+6=1x-3x=10512x-9x=9-5x=2100-20x= 20-2X=20 16+8x=40x-65=426x+18=42y-29=55x-25x=60 76y-75=13y-23=2x-20=00y+20=100 53x-90=162x+9x=1112y-12=280+5x=100 7x-8=6 79y+y=80 80y-90=70 20x=40 45x-50=40 65x+35=10042x+28x=14078y+2y=16065y-30=1003X+5X=4 19y+y=403x-1=888-x=80 精品文档 1y-y=10014X-8X=1225-5x=1590y-90=90-4x=185y+1=-8*5+2X=44 20X-50=5028+6X=882-22X=104-3X=3 10X*=609X=100-XX+3=186-2X=20 4y+2=36 2x-8=28 x+5=47 26x-20x=30 5x-15=15 x+32=664x-3*9=292x+3=635x=1059x-18=18x+6=28x-3x=205 8+15x=28100-10x=20 16+8x=40 x-6*5=66x+8=382y-6=25x-15x=140 12x-3x=9 76y-75=1 13y-13=1x-80=00y+20=500 23x-30=16x+9x=1112y-12=3680+5x=200 7x-8=6 20y+y=42 80y-50=30 20x=140 65x+35=10042x+28x=280y+2y=240 5y-50=20019y+y=40 x-1=188-x=18051y-y=20075-5x=1y-90=909-4x=55y+1=7