Question

the solution of x+y=4 x+2y =8​

Answer 1

x+y=4--------(1)

x+2y =8--------(2)

subtract eq (1) and (2)

x+y=4--------(1)

x+2y=8--------(2)

- - -

-----------

-y=-4

y=4

put y=4 in eq (1)

x+y=4--------(1)

x+4=4

x=4/4

x=1

Answer 2

Answer:

x + y = 4.....(1)

x + 2y = 8......(2)

subtracting (2) from (1)

- y = - 4

so y = 4.

Put y = 4 in equation (1), we get

x + 4 = 4

x = 0.