Question

if x+y=2 and x=4 then x+2y is

Answer 1

Hi friend ,

x+y = 2
x = 4

4+y = 2
y = 2-4
y= -2

x + 2y = 4+2×-2
= 4-4
= 0

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Hope this helped u...

Answer 2

Since x=4 
Substitute the value of x in x+y=2
Which gives, 4+y=2
So, y=(-2)
By substituting both the values in x+2y
We get, 4+2(-2)
So, 4-4= 0