The solution of the pair of linear equation 2x-y=5 and 5x-y=11 is:-
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Answered by
3
ANSWER:
- Value of x is 2
- Value of y is -1
GIVEN:
- 2x - y = 5
- 5x - y = 11
TO FIND:
- Value of x and y.
SOLUTION:
=> 2x - y = 5 ....(I)
=> 5x - y = 11 ...(ii)
Subtracting eq (i) from (ii)
=> (5x-y)-(2x-y) = 11-5
=> 5x-2x = 6
=> 3x = 6
=> x = 6/3
=> x = 2
Value of x = 2
Putting x = 2 in eq(i)
=> 2(2)-y = 5
=> 4 - y = 5
=> -y = 5-4
=> -y = 1
=> y = -1
Value of x is 2
Value of y is -1
Answered by
0
Answer:
2x -y = 5 ........(1)
- 5x -y = 11 ........(2)
(-) (+) (-)
_________
3x = 6
x=6/3
x=2
substituting x=2in equation (1)
2x-y=5
2×2-y=5
4-y=5
-y=5-4
-y=1
y=-1
(x,y) =(2,-1)
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