Question

Solve 89x+91y=449 and 91x+89y=451

Answer 1

Step-by-step explanation:

By subtracting we get

89x+91y=449

91x+89y=451

, x-y=1......... (1)

By adding we get

89x+91y=449

91x+89y=451.

, X+y=5..........(2)

add eqn (1) and (2)

X+y=5

X-y=1

, X=3 and y=2