ex 9 repede dau coroana

Ex 9 Repede Dau Coroana class=

Răspuns :

a+58=(181-4):3
a+58=177:3
a+58=59
a=59-58
a=1

b:11-4=(4+55)x3
b:11-4=59x3
b:11=177+4
b:11=181
b=181x11
b=1991

a+b=1+1991=1992