Question

Решить систему урав-я
<5х+2у=8
<3х-у=7

Answer 1

$left { {{5x+2y=8} atop {3x-y=7}} right.$

$left { {{5x+2y=8} atop {6x-2y=14}} right.$

$left { {{11x=22} atop {3x-y=7}} right.$

$left { {{x=2} atop {y=3x-7}} right.$

$left { {{x=2} atop {y=3*2-7}} right.$

$left { {{x=2} atop {y=-1}} right.$

Ответ: $(2;-1)$