Выразить х через у, затем выразить у через х.
1. 2х + у = 1
2. ху - х - 3 = 0
3. ху/2 + у = 5
1. 2х + у = 1
2. ху - х - 3 = 0
3. ху/2 + у = 5
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x=(1-y)/2
2)xy=3+x xy=3+x
x=(3+y)/y y=(3+x)/x
3)xy/2=5-y y=5-xy/2
xy=10-2y
x=(10-2y)/y