5x +3y =9 ___(1) 2x -3y =12 ___(2)
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4
On add eq 2 from eq 1
Than 3y would cancelled
7x= 21
X=3
Put these value in eq 1
Anonymous:
thnx but i have got it
Answered by
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Sol: 5x+3y=9..(1)
2x-3y=12..(2)
Adding eq (1) and eq (2), we get
+ 5x+3y=9..(1)
2x-3y=12..(2)
________________________
7x. = 21
x. = 21/7
X. = 3
Putting x=3 in eq (1)
5(3)+3y=9
15 + 3y= 9
3y=9-15
3y= -6
y=-6/3
y=-2
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