👤

(25 x a+250) : (35:7) - 25 = 75

Răspuns :

(25a +250 ) :5 =100
25a+250=500
25a=250
a=10
(25*a+250):(35:7)-25=75
(25*a+250):5=75+25=100
25*a+250=100*5=500
25*a=500-250=250
a=250:25=10