Реши уравнения
70+x =24X 4
y-120=280:7
240-x =400:10
y +60=80x 7

1) 70+x=24*470+x=96x=96-70x=262) y-120=40y=40+120y=1603) 240-x=40x=240-40x=2004) y+60=560y=560-60y=500