Question

Помогите срочно!!!!

Answer 1

60:х=112-100
60:х=12
х=60:12
х=5

проверка:
60:5=112-100
12=12



с•300=3000:10
с•300=300
с=300:300
с=1

проверка:
1•300=3000:10
300=300

Answer 2

60:x=112-100
60:x=12
x=60:12
x=5

c•300=3000:10
c•300=300
c=300:300
c=1