Решите прошу, x-320=1000:10, x:7=210:3,x-5=100:2

Question

Решите прошу, x-320=1000:10, x:7=210:3,x-5=100:2

Answer 1

Х-320=1000:10
х-320=100
х=100+320
х=420

х:7=210:3
х:7=70
х=70*7
х=490