Question

решить систему {х+1=5 {3х-у=3

Answer 1

$left { {{x+1=5} atop {3x-y=3}} right.\ left { {{x=5-1} atop {3x-y=3}} right. \ left { {{x=4} atop {3*4-y=3}} right. \ left { {{x=4} atop {12-y=3}} right. \ left { {{x=4} atop {y=12-3}} right. \ left { {{x=4} atop {y=9}} right.$