Question

verify that -(x+y)=(-x)+ (-y) when x=-3/4 and y =-6/7

Answer 1

heya

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→ refer to the attachment

Answer 2

Given:

The given expression is

$- (x + y) = ( - x) + ( - y)$

The value of x=-3/4 and y =-6/7.

To find:

We have to verify the above expression.

Solution:

To verify the above expression using the value of x=-3/4 and y =-6/7 we have to follow the below steps as follows-

The above expression is

$- (x + y) = ( - x) + ( - y)$

Putting the value of x and y on the left side we get-

$- ( \frac{ - 3}{4} + \frac{ - 6}{7} ) \\ - ( \frac{ - 21 - 42}{28} ) \\ \frac{63}{28} \\ = \frac{9}{4}$

Putting the value of x and y on the right side we get-

$- \frac{ - 3}{4} + ( - \frac{ - 6}{7} ) \\ \frac{3}{4} + \frac{6}{7} \\ \frac{21 + 42}{28} \\ = \frac{9}{4}$

Hence the above expression is true.