2/x + 2/y = 30
x + y = 10
If the above equations are true simultaneously, then find the value of xy.
+37157 2/x + 2/y = 30 Multiply this equation by xy (both sides)
2y + 2x = 30 xy
2 ( x+y) = 30 xy
1/15 ( x+y) = xy
x + y = 10 <==== (given)
1/15 ( 10) = xy
2/3 = xy
