Автор - Лука228

(x+4 2/7)-3 6/7=6

9 5/13-(7 6/13-Y)=2 3/13

Ответ

Автор - 11ksenya
(x+4 2/7) - 3 6/7 =6
x+4 2/7=6+3 6/7
x+4 2/7=9 6/7
x = 9 6/7 - 4 2/7
x = 5 4/7

9 5/13-(7 6/13-Y)=2 3/13
7 6/13-Y = - 9 5/13+2 3/13
7 6/13-Y = - 7 2/13
Y = 7 6/13- 7 2/13
Y = 4/13





Ответ

Автор - vipsmile666
(x+4 2/7) - 3 6/7 =6
№1
x+4 2/7=6+3 6/7
x+4 2/7=9 6/7
x = 9 6/7 - 4 2/7
x = 5 4/7

№2

9 5/13-(7 6/13-Y)=2 3/13
7 6/13-Y = - 9 5/13+2 3/13
7 6/13-Y = - 7 2/13
Y = 7 6/13- 7 2/13
Y = 4/13

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