Question

by solving pair of linear equation x+y = 20 and x- y= 10 the value of x and y ​

Answer 1

Answer:

x = 15

and

y= 5

is the right answer

Answer 2

Answer:

X+Y = 20

X= 20-Y. (1)

Now,

X-Y = 10

20-Y-Y = 10

20-10= 2y

2y= 10

y = 5

Putting value of x in eqn 1

X= 20-5

X= 15

Hence, x= 15 and y = 5

Step-by-step explanation:

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