91/5-(5x-4 1/2): 11 1/4=8 14/15 5/12 y+3 2/3+7/8 - вопрос №24407819155412111481415512323785118 от МозгЗнанияПамять 23.10.2020 01:26

Question

Математика: 91/5-(5x-4 1/2): 11 1/4=8 14/15 5/12 y+3 2/3+7/8 y= 5 1/18 ^_^

МозгЗнанияПамять · Answer

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 - 2/546/5 - 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=-10/15X = 10/15:4/15X=2 1/25/12 y+3 2/3+7/8 y= 5 1/185/12y+7/8y=91/18 - 11/330/72y+56/72y = 364/72 - 264/7286/72y = 100/72  y = 100/72:86/72=100:86= 1 14/86=1 7/43...