Question

What is the value of y?
-x+2y=4
x-y=4​

Answer 1

Answer:

$- x + 2y = 4 \\ x - y = 4 \\ by \: addingboth \: equations \: we \: get \: y \: value \: that \: is \\ - x + x + 2y - y = 4 + 4 \\ y = 4 + 4 \\ y = 8$

Answer 2

Answer:

FÎRST ËQÛÃTĪON :

-x + 2y = 4

=> -x = (4 - 2y)

=> -(4 - 2y) = x

=> -4 + 2y = x

SËCØÑD ÉQÙÅTĪØÑ : (Here, put the value of x)

x - y = 4

=> (-4 - 2y) - y = 4

=>4 + 2y - y = 4

=> 4 + y = 4

=> y = 4 - 4

=> y = 0

So, The value of y = 0.

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