2) Solve the following equations :
2x - 3y = 15;
8x +5y
77
Answers
HEya..!!!
2/x - 3/y = 15
8/x + 5/y = 77
[ 1/x = m , 1/y = n ]
use this in Equation,
2m - 3n = 15--------------(1)
8m + 5n = 77------------(2)
from---(1) AND ------(2)
multiply by (4) in ---(1)
we get,
8m - 12n = 60
8m + 5n = 77
(-)___(-)____(-)
————————
-17n = -17
=> n = 1 put in--(2)
8m + 5(1) = 77
=> 8m = 77 - 5
=> m = 72/8
=> m = 9 , n = 1
we assumed above [ 1/x = m , 1/y = n ]
NOW,
m = 1/x = 9
=> x = 1/9
AND,
n = 1/y = 1
=> y = 1,
I HOPE ITS HELP YOU,
Answer:
Giventhat:−
2/x - 3/y = 15
8/x + 5/y = 77
NOWNOW
[ 1/x = m , 1/y = n ]
use this in Equation,
2m - 3n = 15--------------(1)
8m + 5n = 77------------(2)
from---(1) AND ------(2)
multiply by (4) in ---(1)
we get,
8m - 12n = 60
8m + 5n = 77
(-)___(-)____(-)
————————
-17n = -17
=> n = 1 put in--(2)
8m + 5(1) = 77
=> 8m = 77 - 5
=> m = 72/8
=> m = 9 , n = 1
we assumed above [ 1/x = m , 1/y = n ]
NOW,
m = 1/x = 9
=> x = 1/9
AND,
n = 1/y = 1
=> y = 1,