Question

срочно!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!​

Answer 1

Ответ:

1)

(1,-1),(-,1,-2),(7,2)

2

2у-2×=1

-у+6×=7

-2×-6×=1-7

-8×=-6

×=0,75

у-1,5=1

у=2,5

3

×+у=33

×-у=17

2×=50

×=25

25+у=33

у=8