Решите уравнения. (а-15)-16=18 (х-41)-21=8 (136-х)-16=52 (558+х)-52=746 419-(у-9)=36 92-(17-b)=89
А-15 =16+18 , a-15=34 , a =15+34 , a=49 x-41 = 21+8 , x-41=29 , x=70 136-x =52+16 , 136-x = 68 , x=68 558+x = 746+52 , 558+x =798 , x=798-558 , x=240 y-9=419-36 , y-9=383, y=383+9 , y=392 17-b = 92-89 , 17-b =3, b=17-3 , b=14