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-解方程100道-第 2 页225000+x=6x3200=450+5X+XX-0.8X=62X=159115x33x8167(x-2)=2x+33x+9=2718(x-2)=27012x=300-4x3x30x+25=858-2x=6410-3x=1703(x+0.5)=210.5x+8=436x-3x=181.5x+18=3x53-x2=8x0.756=909x-40=5x5+9=2148-27+5x=3110.5+x+21=56x+2x+18=78(200-x)5=30(x-140)70=4(27.5-3.5)x=45(x+8)=102x+3x+10=703(x+3)=50-x+35x+15=603.5-5x=2x1502+3x=6902x-20=43x+6=18(x-3)3x=x+1006x+18=4813(x+5)=16942x+25x=13465x+7=429x+42.5914.2 x+2.5x13410.5x+6.5x=515x-45=10023.4=2x=564.5x-x=2815 5X-2X=183X+0.7=52= 4.2+x261.5= 2x+1016160.2=4x23x=14x14x14x=6535x801.8 +6x5494x402x+8=1623x-14x=14