2x/a + y/b = 2 ; x/a -y/b =4
solve this equation by equating the coefficients
Answers
Step-by-step explanation:
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Answer:
Step-by-step explanation:
hii friend,
5/X+1 + 2/Y-1 = 1/2........(1)
2/Y-1 + 10/X+1 = 5/2......(2)
Let , 1/X+1 = U and 1/Y-1 = V and put the values in equation (1) and (2) .
Then equation (1) and equation (2) becomes,
5U + 2V = 1/2
2(5U +2V) = 1
10U + 4V = 1.....(3)
And,
2V + 10U = 5/2
2(2V +10U) = 5
4V + 20U = 5......(4)
From equation (3) we get,
10U + 4V = 1
10U = 1-4V
U = 1-4V/10......(5)
Putting the value of U in equation (4)
4V + 20U = 5
4V + 20 × (1-4V/10) = 5
4V + 2(1-4V) = 5
4V + 2 - 8V = 5
-4V = 5-2
-4V = 3
V = -3/4
Putting the value of V in equation (5)
U = 1-4V/10 => 1 - 4 × -3/4/10 => 1+3/10 = 4/10 = 2/5.
PUTTING THE VALUE OF V IN,
1/Y-1 = V
1/Y-1 = -3/4
4 = -3(Y-1)
-3Y +3 = 4
-3Y = 4-3
Y = -1/3.
PUTTING THE VALUE OF U IN,
1/X+1 = U
1/X+1 = 2/5
5 = 2(X+1)
5 = 2X+2
2X = 5-2
2X = 3
X = 3/2.
Hence,
X = 3/2 and Y = -1/3.