cum se face ex 4 va rog

Cum Se Face Ex 4 Va Rog class=

Răspuns :

220+325=545. 400+105=505
459+325=784. 428+105=533
462+325=787. 675+105=780
x+325=545
x=545-325
x=220

459+325=784

x+325=787
×=787-325
x=462


400+105=505

x+105=533
x=533-105
x=428

675+105= 780