Question

Решите уравнение 2•(500-y:3)=820

Answer 1

-30....................

Answer 2

2*(500-у:3)=820

500-у:3=820:2

500-у:3=410

-у:3=410-500

-у:3=-90

у=90*3

у=270

2*(500-270:3)=820