Ex 37, dau coronitaaaaaaa

Ex 37 Dau Coronitaaaaaaa class=

Răspuns :

c(a+b)=42 <=> c=42:(-6)=-7 c(a+b)=-72 <=> c=-72:(-9)=8 c(a-b)=-44 <=> c=-44:4=-11 c(a-b)=-250 <=> c=-250:(-25)=10