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Dupa simplificarea fractiei (ab30+35×ab) /15 se obtine...

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Dianageorgiana794ask

Răspuns:

(ab30+35ab)/15=

(1000a+100b+30+35·10a+35·b)/15=

(1350a+135b+30)/15=

15(90a+9b+2)/15=90a+9b+2=9(10a+b)+2=9·ab+2

(ab30 + 35×ab)/15 =

= (1000a + 100b + 30 + 35×10a + 35×b)/15

= (1350a + 135b + 30)/15

= 15(90a + 9b + 2)/15

= 90a + 9b + 2

= 9(10a + b) + 2

= 9(ab) + 2

= 9×ab + 2