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MA LUTETI AJURA? VA ROG!​

MA LUTETI AJURA VA ROG class=

Răspuns :

a) 9+8×7-2=9+56-2=65-2=63

(9+8)×7-2=17×7-2=119-2=117

b) 9+8×(7-2)=9+8×5=9+40=49

(9+8)×(7-2)=17×5=85

c)7×43-29×4+86=301-116+86=185+86=271

(7×43-28)×4+86=(301-28)×4+86=273×4+86=1092+86=1178