Question

the sum of two rational numbers is -8. if one of the is -8/17, find the other​

Answer 1

Let other one be x

ATQ

$\\ \sf\longmapsto x+\dfrac{-8}{17}=-8$

$\\ \sf\longmapsto\dfrac{17x-8}{17}=-8$

$\\ \sf\longmapsto 17x-8=17(-8)=-136$

$\\ \sf\longmapsto 17x=-136+8$

$\\ \sf\longmapsto 17x=-128$

$\\ \sf\longmapsto x=\dfrac{-128}{17}$

Answer 2

Answer:

$let \: the \: unknown \: = x \: and \: y \\ x + y = - 8 \\ y = \frac{ - 8}{17} \\ x - \frac{8}{17} = - 8 \\ x = - 8 + \frac{8}{17} \\ x = \frac{17 \times - 8 + 8}{17} \\ x = \frac{ - 136 + 8}{17} \\ x = \frac{ - 128}{17} \\ thank \: you$