Which of following point is solution of pair of linear equation 5x+2y=27,2x-3y=7
Select one:
a. (4,3)
b. (5,3)
c. (5,1)
O .
d. (5,7)
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Answer:
3×{5x +2y} = 27×3
15x + 6y = 81 ..............1
2×{2x-3y} = 7×2
4x - 6y = 14 ................2
add equation 1 and 2
19x = 95
x = 5
5×5 + 2y = 27
2y = 2
y = 1
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