Question

2x+y = 2*(2)1/2 and 2x-y = 21/2,the value of x is:

Answer 1

It is a answer..........

Answer 2

Given :

$2x+y=2\times \dfrac{5}{2}=5\\\\2x-y=2\dfrac{1}{2}=\dfrac{5}{2}$

To find : the value of x = ?

Solution:

$2x+y=2\times \dfrac{5}{2}=5\\\\2x-y=2\dfrac{1}{2}=\dfrac{5}{2}$

So, using "Elimination method", we get that

$2x+y=5\\\\2x-y=\dfrac{5}{2}\\\\---------------------------\\\\4x=5+\dfrac{5}{2}\\\\4x=\dfrac{10+5}{2}\\\\4x=\dfrac{15}{2}\\\\x=\dfrac{15}{2\times 4}=\dfrac{15}{8}$

Hence, the value of  x is $\dfrac{15}{8}$