Question

How do you evaluate -x+y given x=1/2 and y=-2/5?

Answer 1

Solution:

Given x = 1/2 , y = -2/5

Now ,

value of -x+y

= -1/2 + (-2/5)

= -1/2 - 2/5

LCM of 2 , 5 = 10

= (-5 - 4 )/10

= -9/10

Therefore,

Required value = -9/10

••••

Answer 2

-x+y=?

$\frac{ - 1}{2} +( \frac{ - 2}{5} ) \\ \frac{ - 1}{2} - \frac{2}{5} = \frac{ - 9}{10} \\ so \: - x + y = \frac{ - 9}{10}$