Question

slove the pair of linear equations 47x+21y=110 and 21x+47y=162

Answer 1

First adding the equations
21x + 47y =110
47x + 21y = 162
——————
68x + 68y = 272
x+y = 4......(i)
Now subtracting the equations
21x + 47y = 162
47x + 21y = 110
- - -
——————-
-26x * -26y = -52
X - y = 2......( ii )

And now add both and solve further...

Answer 2

Hence x=1 and y=3. ....Ans