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北师大版五年级数学下册解方程100题解方程1.x=2.?x=3.4x,7.5,134.x,0.6x,55.?x,3.36.x=107.x?=8.χ,χ=9.8×1x=710.20%χ,=11.x-x=2012.x=×13.x-x=2414.4x+x=915.+2x=16.x-=17.x+x=36418.;1,x=19.x=20×20.xx=1221.7x=22.xx=23.4x,7.5,1324.9.8-2x=3.825.26.x,3x=2427.x,x,528.29.x-x=2030.x=3631.x=32.xx,1233.3x,34.x=35.x-x=1536.x?=0.637.15x+6x=16838.x-=39.2x+5=4040.3.5x=14041.20%x,3042.5x,3×=43.5,x=44.2x-x=45.1.5x=2.2546.x?=47.x?=48.x,30%x,49.8×;x,=50.;,,,x,,,51.37.5,20%x,69.552.x-x=53.4.2×3—3x=5.154.13.7—x=5.2955.x=56.20%x=57.x,x=58.1?2x=59.x=60.x?=61.xx=1562.x×20%=2063.x?×=64.4;4x,1,=3;22,x,65.1.5x=28.566.;0.5+x,+x=9.8?267.x,2=4068.7×;2x-6,=8469.8x=4270.x?×=71.x?5=72.?x=73.74.75.1.5x+6=3x76.x-=77.5×3-x?2=880.78.x+2.5×8=9579.x=81.=15082.=83.=84.=85.-=86.=87.=88.=89.=90.=91.92.93.94.95.96.97.98.99.x–60%x=18100.40%x+30=80