(35+19):n=6,n×(70-63)=56

Răspuns :

(35+19):n=6
54:n= 6
n= 54:6
n= 9

n×(70-63)=56
n× 7= 56
n= 56:7
n= 8
La prima. 54:n=6
n=9
La a doua. n×7=56
n=56:7=8