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b) 180:2+ [(50 x 2: 10 +90) + 10-25 x 4]=​

Răspuns :

=90+[(10+90)+10-100]
=90+(100+10-100)
=90+10
=100

Răspuns:

180:2+ [(50 x 2: 10 +90) + 10-25 x 4]=

90+[(100:10+90)+10-100]=

90+[(10+90)+10-100]=

90+(100+10-100)=

90+(110-100)=

90+10=100