Question

Find the value of x and y from ordered pair.
（x+y,2x-y）=（13,2）​

Answer 1

x= 5 y=8

Explanation:

x+ y=13( equation 1)

2x- y=2( equation 2)

From equation 1 we get:

x=13-y( equation 3)

Put equation 3 into equation 2:

2(13-y)- y=2

26-2y-y=2

26-3y=2

-3y=-24

y=8

Then from equation 3

x=5

Answer 2

x=5, y=8

Explanation:

x+y=13

2x-y=2

add these two equations

3x=15

therefore x=5

apply this value in x+y=13

5+y=13

then y=13-5 = 8