Question

Rozwiąż dowolną metodą...
y+1=2(x-1)
x+1=y

Answer 1

Y+1=2(x-1)
x+1=y
y+1=2x-2
x+1=y
-2x+y=-3
x-y=-1
-2x+y-+x-y=-4
-x=-4/:(-1)
x=4
x+1=y
4+1=y
y=5

Answer 2

Y+1=2x-2
x-y=-1

-2x=y=-3
x-y=-1
_____________
-x=-4/(-1)
x=4

x=4
4-y=-1

x=4
-y=-5

x=4
y=5