Răspuns :
a)
x - 108 = 427
x = 427 + 108
x = 535 → descazutul
Verific: 535 - 108 = 427
b)
326 + x = 507
x = 507 - 326
x = 181 → al doilea termen al sumei
Verific: 326 + 181 = 507
a)
x - 108 = 427
x = 427 + 108
x = 535 → descazutul
Verific: 535 - 108 = 427
b)
326 + x = 507
x = 507 - 326
x = 181 → al doilea termen al sumei
Verific: 326 + 181 = 507