Răspuns:
Explicație pas cu pas:
a)
Aura are 9/10
Andrei are 8/10
Alin are 3 x (9/10 - 8/10) = 3 x 1/10 = 3/10
Bogdan aer 32/10 - 9/10 - 8/10 - 3/10 = 12/10
intr-un singur exercitiu 32/10 -9/10 - 8/10 - 3 x (9/10 - 8/10)
= 32/10 - 9/10 - 8/10 - 3 x 1/10 = 32/10 - 9/10 - 8/10 - 3/10 = 12/10
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b)
CD colinde _____
CD jocuri _____ _____ _____ _____ _____ _____
Total = 7 parti egale = 49
1 parte = 49 : 7 = 7
CD colinde = 7
CD jocuri = 7 x 6 = 42 (sau 49 - 7 = 42)