Question

Solve 2X -y=2 and 4x-y=8

Answer 1

Answer:

x=3and y=4

Step-by-step explanation:

2x-y=2..(1)

4x-y=8..(2)

- + -

from equation 1 and 2,we get

x=3

y=4

Answer 2

Given :-

2x - y = 2 ------(i)

4x - y = 8 ------(ii)

Solution :-

Subtracting the Polynomial (i) and (ii) -

2x - y = 2 ------(i)

4x - y = 8 ------(ii)

(-) (+) (-)

_________________

-2x = -6

x = 6/2

x = 3

$\rule{200}{1}$

Substitute the value of x into polynomial (i) -

2 × 3 - y = 2

6 - y = 2

y = 6 - 2

y = 4

$\rule{200}{1}$

Thus, the values of x and y are 3 and 4.

$\rule{200}{1}$

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