👤

[(a+270:3)x5+100]:600=1

Răspuns :

[(a+90)x5+100]:600=1

(a+90)x5+100= 1 x 600

(a+90)x5+100=600

(a+90)x5 = 600-100

(a+90)x5 = 500

a+90= 500 : 5

a+90 = 100

a= 100-90

a=10