👤

42-(460-10×a)=366 Dau coroana

Răspuns :

42-(460-10×a)=366
-(460-10×a) = 366-42
-460+10×a = 324
10×a = 324+460
10×a = 784
a = 784:10
a = 78,4

Verificare:
42-(460-784) = 42- (-324)=42+324 = 366