Question

решите [(185-5х)×15-90] :45=58

Answer 1

(185-5*х)*15-90):45=58
(185-5х)*15-90=58*45
(185-5*х)*15=2610+90
(185-5х)*15=2700
185-5х=2700:15
185-5х=180
5х=5
х=1