Pleaseee someone help me in this question ihave bben eating for half an hour and no one helped me.

1 answer:

8 0

Cross Multiply by 'x - 5'
Hence
y(x - 5) = 4 -3x
xy - 5y = 4 - 3x

Move all the terms containing an 'x' to one side of the equals and all the others to the opposite side.
xy + 3x = 4 + 5y
Factor out 'x'
x(y + 3) = 4 + 5y
'Cross' divide by 'y + 3'
x = ( 4 + 5y) / (y + 3 )

'x' is now the subject.

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So baically

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a. system of equations are
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b. solve

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subsiute
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a. s+a=300
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b. solution above
175 students
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