Question

x=y=-z
x=999
find 999x+999y+999z

Answer 1

Given ,
x = y = -z
so,
x is 999
y is 999
-z is 999 ,z is -999
999x + 999 y + 999z
= 999*999 + 999*999 + 999*-999
=998001+998001+(-998001)
=998001+998001-998001
= 998001
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Answer 2

Here,
x=y=-z
Given,
x=999
•°• y=999
And, -z=999
•°• z=-999

Now,
999+999+999=(999×999)+(999×999)+[999+(-999)]
=998001+998001+(-998001)
=1996002-998001
=998001