Question

find that values of (x+y) and (x-y)

Answer 1

Answer:

Y=1 and X=2

Step-by-step explanation:

27x+31y =85........(i)

31x+27y=89............(ii)

Adding both (i) and (ii)

31x+27y+27x+31y=89+58

58x+58y=174

58(x+y)=174

x+y=174/58

x+y=3

x=3-y

Putting x=3-y in equation (i)

27(3-y)+31y=85

81-27y+31y=85

4y=85-81

4y=4

y=1

Then,

x=3-y

x=3-1=2

Therefore, x=2 and y=1