20-2=63-3=27x5=510-3=40x9=23x30=84-4=15-3=12x4=513x9=4x815=99-9=75-5=205-5=46x10=24x20=40-2=60x6=900-9=130x4=810-3=72-24=16x4=16x5=63-3=50x6=100x5=23x40=45x30=60-2=67+23=480-8=26x20=0x51=0-47=57-7=505-5=21-5=92-45=270+30=460+200=600-3=6x7+6=36-3-2=5x5+4=50-24-4=9+9-9=800-800-4=8x9-7=72-72-6=8+2x10=90-30-3=6x80-20=12x3-3=5x8-8=57x3x0=86-86-2=38x2x7=24+15+6=18-3-4=50x6+0=45+55-5=70x(40-32)二0-3000=504-2=43x21^38x48-347-7~817-8-37x28-18x54^431-6-381-2~75+21=69-57=49+37=81-25=40-8=25x3=268+125=280+40=66-22=46x20=85-42=28+2 二14x6=700-300 二51-3=21-7=18+16=810-9=8x7+6=300-2—5=960-4=5+3=1x10000=90-31=60x9=55+41=30x4=600x8=78-28=80+120=5x60=15x2=12x8=36-12=120-20=16-2=50-25=20+180=200x4=39-3=20-14=16x5=30x80=800-8=265+85=110x35=901-3=0-245=0x245=0+245=245-5=3000-300=605-5=50x50=306-3=702-199=480-3=91x31=80-10=465-5=870-8=400x20=210-7=4500-9=5x80=300x30=88+112=380-7=36x8=86x7=27x90=33-3=400x5=45-3=51+31=13x3=60-4=120-50=300-64=64x10=6+6x7=400x5=50-31=425x0=528-0=450+80=57+140=800x2=40-2=120x80=21-7=27x8=40-2=62x15=872-124 二860-4=27+127 二19x5=700-5=40x20=350+70=520-430=591-3=51x17=8x122=15x61=178-2=87-3=350-7=15x5+5=700x2=600-50=18x4=56x2=320x3=200-36=60x15=15+5x3=72-6-2=380+50=400x3=789+0=8+2x20=300-5=22+40=15x4+8=7x8-7=680x0=56-8=40x25=880-8=3000-400=480-8=420-7=22x22=6x80+20=16x50=420-330=19x39=5x28=60x5=270-30=17x3=92x7=212+88=38x60=630-9=14x4=581+12=800x6=87-38=500x4=43x7=540-9=14x5=245x9=309x5=350-80=570+50=490x5=23x3=70+550=180-3=800x6=200x8=500x4=530-70=540-9=850x2=14x5=263-80=380-190=6x6+6=400x6=436-24=50-23=111x9=35x0=120x3=40x6=360+80=300x6=300x7=85+247=7+3x4 二310x3=90-26=200x5=8x6+7=320x2=522+23 二660-6=6x4-2=700x2=120x4=80x3=80x5=70+550=40x5=5000-500=6x80+20=8600-600=420-330=1300-500=5x28=600x4=60x5=59+42=17x3=212+88=87-38=630-9=43x7=350-7=850-2=350-80=98+26x0=570+50=102x2=23x3=700x3=180-3=310x3=530-70=300-5=850x2=80x5=263-80=6000+4000=850-2=5000-500=98+26x0=8600-600=102x2=1300-500=700x3=600x4=310x3=59+42=300-5=80x5=6000+4000=90-26=310x3=8x6+7=630-9...
