Question

5. Verify (a) (-x)+(-y) = -(x + y)
(b) X-(-y) = x + y
For the following values of x and y
(i) x = 5, y = 3 (ii) x = 4, y = 9​

Answer 1

Answer:

(a) (-x)+(-y)= -(x+y)

=(-5)+(-3)= -(x+y)

=-5-3 = -(5+3)

=-8 = -8

(b) x-(-y) = x+y

= 4-(-9) = 4+9

= 4+9 = 4+9

= 13 = 13

so,verified

Answer 2

Answer:

(a)(-x)+(-y)=-(x+y)

-5+(-3)= -(5+3)

-5-3= -8

-8= -8

(b)x-(-y)=(x+y)

4-(-9)=(4+9)

4+9=13

13=13