Question

If x + |x| + y = 7 and x + |y| - y = 6 , then x + y =

Answer 1

Okay, so is the answer 3?

Answer 2

i need to know how to do it not the answer....

Answer 3

When working with x + |x| + y = 7 and x = - 2 then y = 7 and when working withx + |y| - y = 6 and y = 2 then x = 6 So when x = -n then y = 7 and when y is not = - then x = 6 So with those restrictions we could say x + y = 7 + 6 = 13 Any thing else the solutions are limitless

Answer 4

Where are the answers?

Answer 5

I don't see them

Answer 6

ksaimouli typed that it's 3 and yes it is but I need to know the method

Answer 7

Here is my solution :
for x>0 ; y>0 => x=6, y=-5
for x>0 ; y<0 => x=4, y=-1 => x+y = 3 (this is true because it fits the equation)
for x<0 ; y>0 => x =6, y=7
for x<0, y<0 => y=7, x =20

Hence, x+y = 3

Answer 8

Bit complicated

Answer 9

@nixy that is also a solution, but doesn't fit into the equation

Answer 10

but i got it