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Ajutațimă: 7/100 + 49/150 =

Răspuns :

7/100+49/150= aducem la acelasi numitor
calculam c.m.m.m.c
100=2²·5²
150=3·2·5²
[100,150]=2²·3·5²=300
300:100=3 deci cu 3 amplificam I fractie
300:150=2 cu 2 amplificam a II fractie
avem(7x3+49x2)/300=(21+98)/300=119/300
[tex] \frac{7}{100} + \frac{49}{150} [/tex]
[tex] \frac{7}{100} [/tex]=[tex] \frac{105}{1500} [/tex] (se amplifica cu 15)
[tex] \frac{49}{150 } [/tex]=[tex] \frac{490}{1500} [/tex] (se amplifica cu 10)
[tex] \frac{105}{1500} + \frac{490}{1500}= \frac{105+490}{1500}= \frac{595}{1500} [/tex]=[tex] \frac{119}{300} [/tex] (se simplifica cu 5)