(4000:10*8):(5600*3:84)+65*12:60=49-4x Чему равен x?

Question

(4000:10*8):(5600*3:84)+65*12:60=49-4x
Чему равен x?

Answer 1

(4000:10*8)    :     (5600*3:84)  +    65*12:60    = 49-4x
3200                            200                 13

3200:200+13=49-4х
16+13=49-4х
29=49-4х
4х+29=49
4х=49-29
4х=20
х=5