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Sagot :
Yeah answer C is right because from question,
5x -3y=1......eq 1
x-2y=-4 ......eq2
From equation 2 too we can write
x = -4 + 2y ... put this x value on eq 1 so
5(-4+2y) - 3y = 1
-20 + 10y -3y=1
Or, 7y=21
So y=21/7=3
And put the value of y on equation 2
x -2 X 3 =-4
Or x= -4+6
So x=2 answer from question too we get value of x and y is 2,3 so
xy= 2X3=6 answer
5x -3y=1......eq 1
x-2y=-4 ......eq2
From equation 2 too we can write
x = -4 + 2y ... put this x value on eq 1 so
5(-4+2y) - 3y = 1
-20 + 10y -3y=1
Or, 7y=21
So y=21/7=3
And put the value of y on equation 2
x -2 X 3 =-4
Or x= -4+6
So x=2 answer from question too we get value of x and y is 2,3 so
xy= 2X3=6 answer
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