Question

решите систему ур-ий
6х+3=5х-4(5у+4)
3(2х-3у)-6х=8-у

Answer 1

вроде должно быть правильно

Answer 2

$left { {{6x+3=5x-4(5y+4)} atop {3(2x-3y)-6x=8-y}} right. \ \ \ left { {{6x-5x=(-3)-20y-16} atop {6x-9y-6x=8-y}} right. \ \ \ left { {{x=(-20y)-19} atop {-9y+y=8}} right. \ \ \ left { {{x=(-20y)-19} atop {-8y=8}} right. \ \ \ left { {{x=(-20y)-19} atop {y=(-1)}} right. \ \ \ \ \ x=(-20) * (-1) - 19 \ \ x=20-19 \ \ x=1$