Answers

2014-10-09T13:20:32+08:00
Since you're not given any other data then i presume that you are asked x in terms of y. then you'll have
y =  \frac{4x}{7y} + 6

y =  \frac{4x +7y(6)}{7y}
7y(y) = 4x + 42y
7y^2 = 4x +42y
7y^2 - 42y = 4x
x =  \frac{7y^2 - 42y}{4}
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