248-(у+123)=24(138+х)+57=218(х-8)×12=132. Created by NASTYASMILE23. matematika-ru

1) 248-(у+123)=24248-y-123=24-y=-347|:(-1)y=3472)(138+х)+57=218138+x+57=218x=233)(х-8)×12=13212x-96=13212x=36x=3