Aflati valoarea lui x din relatia (3 * x-5):4+(275-2*30):5=53 rog urgent dau coroana

Răspuns :

(3 * x-5):4+(275-2*30):5=53
(3 * x-5):4+(275-60):5=53
(3 * x-5):4+215:5=53
(3 * x-5):4+43=53
(3 * x-5):4=53-43
(3 * x-5)=10*4
3 * x-5=40
3 * x=45
x=45/3
x=15