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Daca 12a + 15b =303,calculeaza
A)4a+5b
B)1010:(8a+10b)

Răspuns :

Estela00
12a+15b=303

a) 4a+5b=(12a+15b):3
4a+5b=303:3
4a+5b=101

b) 1010:(8a+10b)=

8a+10b=(4a+5b)×2
8a+10b=101×2
8a+10b=202

1010:202=5

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