Решите уравнение:
9b+6b-15=615;
2a+123a+97=472;
17x-x+5x-19=170;
73y-y-22y+40=190

Сяб!

1) 15b=630b=422) 125a=375a=3

9b+6b-15=6159b+6b=615+1515b=630b=630:15b=422a+123a+97=4722a+123a=472-97125a=375a=375:125a=317x-x+5x-19=17017x-x+5x=170+1921x=189x=189:21x=973y-y-22y+40=19073y-y-22y=190-4050y=150y=150:50y=3