Question

Выразите y через x
1)2y-6=x
2) x+5y=1
3)x-y=5
Выразите x через y
1)8y-2x=6
2)-5y-x=-2
3) x-7y=8

Answer 1

1) 2y - 6 = x
y = ( x + 6 ) : 2 = 0,5x + 3
2) x + 5y = 1
y = ( 1 - x ) : 5 = 0,2 - 0,2x
3) x - y = 5
y = x - 5
1) 8y - 2x = 6
x = ( 8y - 6 ) : 2 = 4y - 3
2) - 5y - x = - 2
x = 2 - 5y
3) x - 7y = 8
x = 7y + 8