4
-7
7. If x=
=
-2
y =
and z=
then verify that
9
12
3
x – (y – z) = (x – y)

1 thought on “4<br />-7<br />7. If x=<br />=<br />-2<br />y =<br />and z=<br />then verify that<br />9<br />12<br />3<br />x – (y – z) = (x – y)”