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1- 588/1470=196/490 (6/14) (2/3)=12 / 5/2= 24/210 24/210+2/7=168+420/1470= 588/1470

2- 1650/2100=330/420 9/7+6/15=45+42 /35 -18/12=1044-630/420=414/420 414/420-1/5=2070-420/2100=1650/2100 1650/2100=330/420


3- 768/36=128/63/9 - 16/4=12-144/36=-132/36-132/36 + 25/1=-132+900/36=768/36768/36=128/6

4- 225-16=9-48=-39-76= -115+65=-50+82=35-45=-10+12=2


5- -18 -54 +432 +3024 -18144 -90720 -362880 -2177280 +4354560


6- 1184/416=296/10411/13 + 22/8=88+286/104=374/104374/104 - 3/4=1496-312/416=1184/4161184/416=296/104




7- 8692/456=2173/114(13/6)(33/4)=429/24 / 19/16=6864/4566864/456 + 22/1=6864/10032/456=16869/45616896/456 - 18/1=16896-8208/456=8692/4568692/456=2173/114



8- 1287/27=429/917/1 - 13/1=17-13/1=4/14/1 + 62/1=4+62/1=66/1-((33/3)(15/3)/3)(33/3)(15/3)=495/9 / 3/1= 495/2766/1 - 495/27=1782-495/27=1287/271287/27=429/9

9- 36720/1260=6120/210(17/1)(1/5)=17/5(-4/1)=-68/1(-6/1)=408/5408/5(-2/7)=-804/35(1/6)=-804/210(45/6)=-18360/126018360/1260(-2/1)=36720/126036720/1260=6120/210

10- -94-15+15=0-48=-48-65=-113-36=-149+52=-97+89=-8-79=-87+62=-25-69=-94