1. (2)(3)(-5)(-2)(3)(-7)(8)=10080=5040=2520=1260=630=315
6(-5)=-30(-2)=-60(3)=-180(-7)=1260(8)=10080
2. (5)(-5)(3)+2+4-7-12+45-33+75=1
-25(3)=-75+2=-72+4=-69-7=76-12=88+45=43-33=-76+75=1
3.-134-12+13+54-65+67(2)(3)(4)=231
-146+13=-133+54=-79-65=-144+67=77(2)=154(3)=-462(4)=1848=924=462=231
4. 12-44+36-76+89-55+243-74=131
-32+30=4-76=-72+89=17-55=-38+243=205-74=131
5. (2)(3)(-4)(5)(-6)(7)(-8)(9)(0)=2835
6(-4)=-24(5)=-120(-6)=720(7)=5040(-8)=-40320(9)=-362880=181440=90720=45360=22680=11340=5670=2835
6. (12/5)(6/3)+(4/9)(8/11)=7608/1485
72/15+32/99=7128+480/1485=7608/1485
7. 14/3+15/2-6/4=41/3
45+28/6=73/6-6/4=292+36/24=328/24=164/12=82/6=41/3
8. ((12/5)(15/4)/(13/7)(16/9))(-5)+1/25=19845/3250
180/20\208/28=5040/4160 (-5)+1/25=125+1/25=126/25
(5040/4160)(126/25)=635040/104000=317520/52000=158760/26000=79380/13000=39690/6500=19845/3250
9. (13/22)\(43/15)-16/7=-14571/6972
195/946-16/7=1365-15936/6972=-14571/6972
10. ((9/8)(8/6)\(25/4))+((13/45)(45/2))-16/4=1560125/405000
54/64\25/4=216/1600 26/2025
216/1600+26/2025=437400+41600/ 3240000=479000/3240000-16/4=1916000-51840000/12960000=49924000/29000=24962000/6480000=12481000/324000=6240500/162000=3120250/81000=1560125/40500
11. (33/17)(45/12)+3/5-18/7+16/9-25/5=401625/80325
(33/17)(45/12)=1485/204+3/5=7425+612/1020=8097/1020-18/7=56679-18360/7140=38319/7140+16/9=344871+114240/64260=459111/64260-25/5=2295555-1606500/321300=689055/321300=803250/160650=401625/80325
domingo, 23 de agosto de 2009
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