Решение:
3,4y + 0,65 = 0,9y - 25,6
3,4y - 0,9y = -25,6 - 0,65
2,5y = -26,25
y = -26,25/2,5
y = -10,5
Первый ответ: y = -10,5
1 / 5 = x/4,7
* = x / 4,7
= x / 4,7
x / 4,7 = x / 4 = x / = x *
x * =
x = /
x =
Второй ответ: x =
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Решение:
3,4y + 0,65 = 0,9y - 25,6
3,4y - 0,9y = -25,6 - 0,65
2,5y = -26,25
y = -26,25/2,5
y = -10,5
Первый ответ: y = -10,5
1
/ 5
= x/4,7
x / 4,7 = x / 4
= x /
= x * 
x *
= 
x =
/
x =
Второй ответ: x =