Question

find the value of- 3/7+(-6/11)+(-8/21)

Answer 1

$- 3by7 - 6by7 - 8by27$
$( - 81 - 162 - 56)by189$
$- 299by189$

follow me

Answer 2

You just need a LCM, by that, you can reach a easy conclusion, (Negative sign, do speak the trouble):

$\frac{-3 \times 11 - (6 \times 7)}{77} - \frac{8}{21}$

Stuck? "LCM" is "77"..

$\frac{-33 - (42)}{77} - \frac{8}{21}$

$\frac{-75}{77} - \frac{8}{21}$

LCM, is? "231".. Yes, you get it:

$\frac{-75 \times 3 - (8 \times 11)}{231}$

$\frac{-225 - 88}{231}$

$\frac{-313}{231}$

Well. You got the answer, already.