решите уравнение
x+57=62;
71-x=51;;
x-31=20;
82-x=70;
27+x=35;
x-300=500

1) x=62-57x= 52) x= 71-51x= 203) x= 20+31x=514)x=82-70x=125)x=35-27x=86)x=500+300x=800

x+57=62x=62-57x=571-x=51-x=51-71×=-20/-1x=20x-31=28x=28+31x=5982-x=70-x=70-82-x=-12x=-12/-1x=1227+x=35x=35-27x=8x-300=500x=500+300x=800