Question 2844
Since you have 2 variables x and y in the given equation, you would require one more equation to obtain values of x and y.
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6x + 9y = 15
3[2x + 3y = 5]
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2x + 3y = 5
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then,
x=(5-3y)/2
y=(5-2x)/3
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Substitute either of these two relative values of x or y in the 2nd equation.
Then you will have an equation entirely in x or y.
solve to obtain the required value,and then use the relative value to obtain the second variable.
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Hope this helped,
Best of luck.