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calculeaza 0,8×(0,75-1/4)×(-2)

Răspuns :

transformi in fractii
0,8=8/10 simplificat 4/5
0,75=75/10 simplificat 15/2

4/5×(15/2-1/4)×(-2)=
aduci paranteza la acelasi numitor
4/5×(30/4-1/4)×(-2)=
4/5×29/4×(-2)=
116/20×(-2)=
-116/10=11,6