Question

9 1/5-(5x-4 1/2):11 1/4=8 14/15
5/12 y+3 2/3+7/8 y= 5 1/18
помогите плиззз)))) ^_^

Answer 1

9 1/5-(5x-4 1/2):11 1/4=8 14/15


(5x-4 1/2):11 1/4= 5Х:45/4 - 9/2:45/4 = 4/15X - 2/5
46/5 - 4/15X + 2/5 = 134/15
-4/15X = 134/15-46/5-2/5
-4/15X = 134/15 - 48/5
-4/15X = 134/15-144/15
-4/15X=-10/15
X = 10/15:4/15
X=2 1/2


5/12 y+3 2/3+7/8 y= 5 1/18

5/12y+7/8y=91/18 - 11/3
30/72y+56/72y = 364/72 - 264/72
86/72y = 100/72 
y = 100/72:86/72=100:86= 1 14/86=1 7/43