Question

Алгебра 7 класс, решите пожалуйста.

Answer 1

$left { {{y=7-2x} atop {5x-2y=40}} right. \  left { {{y=7-2x} atop {5x-2(7-2x)=40}} right. \  left { {{y=7-2x} atop {5x-14+4x=40}} right. \  left { {{y=7-2x} atop {9x-14=40}} right. \ left { {{y=7-2x} atop {9x=54}} right. \  left { {{y=7-2x} atop {x=6}} right. \  left { {{y=7-2*6} atop {x=6}} right. \  left { {{y=-5} atop {x=6}} right.$

Answer 2

там y=7-2x

Answer 3

a ne 9

Answer 4

jr

Answer 5

y=7-2x is OS OS Lady Jora OS UA UA OS is is is 62

Answer 6

исправлено на y