Question

please solve this questions ,

Answer 1

15. x = 2/5, y = 1/2

(x + y) ÷ (x -y)

(2/5 + 1/2) ÷ (2/5 - 1/2)

(4/10 + 5/10) ÷ (4/10 - 5/10)

9/10 ÷ (-1/10)

9/10 × 10/-1

-9

Hope it helps !

Answer 2

$\Huge\bf\underline{\underline{\red{question}}}$

Find (x+y)÷(x-y) if x=2/5 & y=1/2.

$\Huge\bf\underline{\underline{\red{solution}}}$

$(x + y) \div (x - y)$

$= ( \frac{2}{5} + \frac{1}{2}) \div ( \frac{2}{5} - \frac{1}{2})$

$= ( \frac{4 + 5}{10} ) \div ( \frac{4 - 5}{10} )$

$= \frac{9}{10} \div ( \frac{ - 1}{10})$

$= \frac{9}{ - 1}$

$= (- 9)$

Hence, the answer is (-9).

Thanks!