solve pair of linear equation 1/2(x+2y)+5/3(3x-2y)=-3/2 5/4(x+2y)-3/5(3x-2y)=61/60 with full solution
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1/2 (x+2y) + 5/3 (3x-2y) = -3/2 eq1
5/4 (x +2y) - 3/5 (3x -2y) = 61/60 eq2
Lets take eq1 and find LCM of 2 and 3 we get
3 (x+2y) + 10(3x - 2 y) = -3 ×6/2
3x + 6y + 30x -20y = -9
33x - 14y = -9 eq3
Now solve eq2
Take LCM of 4 and 5 we get
25 (x + 2y) -12 (3x - 2y) = 61 ×20/60
25x + 50y -36x +24y = 61/3
-11x + 74y = 61/3
-33x + 222y = 61 eq 4
Now solve eq3 and eq 4 we get
208y = 52
y = 52/208 = 1/4
Now put y in eq 4
-33x + 222×1/4 = 61
-33x = 61 - 111/2
-33x = (122 -111)/2
-33x = 11/2
x = - 11/66 = -1/6
Answer is x = -1/6 and y = 1/4
Thanks
5/4 (x +2y) - 3/5 (3x -2y) = 61/60 eq2
Lets take eq1 and find LCM of 2 and 3 we get
3 (x+2y) + 10(3x - 2 y) = -3 ×6/2
3x + 6y + 30x -20y = -9
33x - 14y = -9 eq3
Now solve eq2
Take LCM of 4 and 5 we get
25 (x + 2y) -12 (3x - 2y) = 61 ×20/60
25x + 50y -36x +24y = 61/3
-11x + 74y = 61/3
-33x + 222y = 61 eq 4
Now solve eq3 and eq 4 we get
208y = 52
y = 52/208 = 1/4
Now put y in eq 4
-33x + 222×1/4 = 61
-33x = 61 - 111/2
-33x = (122 -111)/2
-33x = 11/2
x = - 11/66 = -1/6
Answer is x = -1/6 and y = 1/4
Thanks
pksehgaljaimatadi:
I have checked your solution that is why I m sayig it is in correct
Answered by
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Answer:
ANSWER x=1/2. y=5/4
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