Question

x÷(450-390)=4
39-x=49÷7

56÷x=800:100
(360÷6)÷x=4

Answer 1

х÷(450-390)=4
х÷60=4
х=60*4
х=240

39-х=49÷7
39-х=7
х=39-7
х=32

56÷х=800:100
56÷х=8
х=56÷8
х=7

(360÷6)÷х=4
60÷х=4
х=60÷4
х=15