Question

2/x-1+3/y+1=2 and 18/x-1+12/y+1=13 find x and y

Answer 1

Answer:

x = 3

y = 2

Step-by-step explanation:

 2/(x - 1) +   3/(y + 1) =  2   L1

18/(x  - 1) + 12/(y + 1) = 13   L2

L2 = 9L1 - L2

18/(x - 1) + 27/(y + 1) = 18

-18/(x - 1) - 12/(y + 1) = -13

15/(y + 1) = 5

15/5 = y + 1

3 = y + 1

y = 3 - 1

y = 2

2/(x - 1) + 3/(y + 1) =  2

2/(x - 1) + 3/(2+1) = 2

2/(x - 1) + 3/3 = 2

2/(x - 1) + 1 = 2

2/(x - 1) = 2 -1

2/(x - 1) = 1

2 = x - 1

x = 2 + 1

x = 3