1/4解方程及解比例练习题解比例:x:10=41:310.4:x=1.2:24.212=x321:51=41:x0.8:4=x:843:x=3:121.25:0.25=x:1.692=x8x36=354x:32=6:2524x5.4=2.2645:x=18:262.8:4.2=x:9.6101:x=81:412.8:4.2=x:9.6x:24=43:318:x=54:4385:61=x:1210．6∶4＝2.4∶x6∶x＝15∶130.612＝1.5x34∶12＝x∶451112∶45＝2536∶xx∶114＝0.7∶1210∶50＝x∶401.3∶x＝5.2∶20x∶3.6＝6∶1813∶120＝169∶x4.60.2＝8x38＝x64解方程X－27X=432X+25=3570%X+20%X=3.6X×53=20×4125%+10X=54X-15%X=68X＋83X＝1215X－3×215＝7532X÷41＝126X＋5=13.4834143X3X=83X÷72=167X＋87X=434X－6×32=2125÷X=31053X=722598X=61×51162/4X÷356=4526×25134x－3×9=2921x+61x=4103X－21×32=42041xx8)6.2(2x6X＋5=13.425X-13X=3104χ－6＝385X=1915218X=154X÷54=281532X÷41=1253X=722598X=61×5116X÷356=4526÷2513X-0.25=414X=30%4+0.7X=10232X+21X=42X+41X=105X-83X=400X-0.125X=8X36=43X+37X=18X×(16+38)=1312x－0.375x=65x×32+21=4×83X－73X＝125X－2.4×5＝80.36×5-34x=3523(x-4.5)=712x-25%x=10x-0.8x=16+620x–8.5=1.5x-45x-4=21X＋25%X=90X－37X=89X－27X=432X+25=3570%X+20%X=3.6X×53=20×4125%+10X=54X-15%X=68X＋83X＝1215X－3×215＝7532X÷41＝126X＋5=13.4834143X3X=83X÷72=1673/4X＋87X=434X－6×32=2125÷X=31053X=722598X=61×5116X÷356=4526×25134x－3×9=2921x+61x=4103X－21×32=42041xx8)6.2(2x6X＋5=13.425X-13X=3104χ－6＝385X=1915218X=154X÷54=281532X÷41=1253X=722598X=61×5116X÷356=4526÷2513X-0.25=414X=30%4+0.7X=10232X+21X=42X+41X=105X-83X=400X-0.125X=8X36=43X+37X=18X×(16+38)=1312x－0.375x=65x×32+21=4×83X－73X＝125X－2.4×5＝80.36×5-34x=3523(x-4.5)=712x-25%x=10X＋25%X=90x-0.8x=16+620x–8.5=1.5x-45x-4=21X－37X=89X－27X=432X+25=3570%X+20%X=3.6X×53=20×4125%+10X=54X-15%X=68X＋83X＝1215X－3×215＝75834143X3X=834/4X÷72=167X＋87X=434X－6×32=2125÷X=31053X=722598X=61×5116X÷356=4526×25134x－3×9=2921x+61x=4103X－21×32=42041xx8)6.2(2x6X＋5=13.425X-13X=3104χ－6＝385X=1915218X=154X÷54=281532X÷41=1253X=722598X=61×5116X÷356=4526÷2513X-0.25=414X=30%4+0.7X=10232X+21X=42X+41X=105X-83X=400X-0.125X=8X36=43X+37X=18X×(16+38)=1312x－0.375x=65x×32+21=4×83X－73X＝125X－2.4×5＝80.36×5-34x=3523(x-4.5)=712x-25%x=10x-0.8x=16+620x–8.5=1.5x-45x-4=21
