Question

Solve for x and y
15/x+y - 2/x-y=1
15/x+y + 7/x-y =10

Answer 1

Answer:

Step-by-step explanation:

15/X+Y -2/X-Y=1 :15/X+Y+7/X-Y

LET 1/X+Y BE 'A' AND 1/X-Y BE 'B'

SO 15A-2B=1 AND 15A+7B=10

BY ELIMINATING,

B=-2 AND A=-4/15

A=1/X+Y AND B=1/X-Y

SO -4/15=1/X+Y AND -2=1/X-Y

SO X+Y=15/-4 AND X-Y=1/-2

AGAIN BY ELIMINATION

X=13/-8 AND Y=15/-4

Answer 2

hope it'll help you......