Question

Выразите x через y и y через x.

Answer 1

1) 5x-y=17
x=(17+y)/5
y=5x-17
2) x+6y=4
x=4-6y
y=(4-x)/6

Answer 2

у=5х-17
х=3.4+у/5
_______
у=2/3 - х/6
х=4-6у