dero20 dero20
  • 13-11-2018
  • Mathematics
contestada

Adding and subtracting denominators
6/7 + 1/3

Respuesta :

Аноним Аноним
  • 13-11-2018

First you need to make both denominators the same number.


The number we can use is 21.


6/7 : to make the denominator 21, you need to multiply the numerator and the denominator by 3.


6 × 3 = 18

7 × 3 = 21


The equivalent is 18/21


1/3 : to make the denominator 21, you need to multiply the numerator and the denominator by 7.


1 × 7 = 7

3 × 7 = 21


The equivalent is 7/21


18/21 + 7/21 = 25/21 = 1 4/21

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