3x-5y=9 and 5x-3y=7 find x and y
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3x-5y = 9 *5
5x - 3y = 7 *3
New equations
15x - 25y = 45 ……………(1)
15x - 9y = 21 …………….(2)
Subtract (1) from (2)
We get y = -1.5
substitute this value of y in any one of equations we get value of X
3x - 5(-1.5) = 9
3x = 16.5
x = 5.5
5x - 3y = 7 *3
New equations
15x - 25y = 45 ……………(1)
15x - 9y = 21 …………….(2)
Subtract (1) from (2)
We get y = -1.5
substitute this value of y in any one of equations we get value of X
3x - 5(-1.5) = 9
3x = 16.5
x = 5.5
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