(3+7/11)*1/4-1/22
(5-3/11):13+1/2
(3+7/11)*1/4-1/22 =1(5-3/11):13+1/2
1) (3+7/11)*1/4=40/11*1/4=10/11
2)10/11-1/22=19/22
3) (5-3/11):13=52/11:13=52/11*1/13=4/11
4)4/11+1/2=19/22
5)19/22:19/22=19/22*22/19=1
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(3+7/11)*1/4-1/22 =1
(5-3/11):13+1/2
1) (3+7/11)*1/4=40/11*1/4=10/11
2)10/11-1/22=19/22
3) (5-3/11):13=52/11:13=52/11*1/13=4/11
4)4/11+1/2=19/22
5)19/22:19/22=19/22*22/19=1