1/8+15/16, 3/10+7/2

HELLP ME PLS!!

Răspuns:

17 / 16 ; 19 / 5

Explicație pas cu pas:

1 / 8 + 15 / 16 =

= 2 / 16 + 15 / 16 ( am amplificat prima fractie cu 2 )

= 17 / 16

3 / 10 + 7 / 2 =

= 3 / 10 + 35 / 10 ( am amplificat a doua fractie cu 5 )

= 38 / 10

= 19 / 5 ( am simplificat fractia cu 2 )

[tex] \frac{1}{8} + \frac{15}{16} = \frac{2 \times 1 + 15 \times 1}{16} = \frac{2 + 15}{16} = \frac{17}{16} = 1 \frac{1}{16} [/tex]

[tex] \frac{3}{10} + \frac{7}{2} = \frac{1 \times 3 + 5 \times 7}{10} = \frac{3 + 35}{10} = \frac{38}{10} = 3 \frac{8}{10} [/tex]

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