I thought I was getting the hang of Algebra but this question has had me stumped all day. Y=(XY+2)/(3X-4) make X the subject. Apparently the answer is X=(2Y+1)/Y I can't get anywhere near the answer. Any help would be appreciated.
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Originally Posted by futureprof I thought I was getting the hang of Algebra but this question has had me stumped all day. Y=(XY+2)/(3X-4) make X the subject. Apparently the answer is X=(2Y+1)/Y I can't get anywhere near the answer. Any help would be appreciated. Multiply through by (3X-4) $\displaystyle Y(3X-4) = XY+2 $ Distribute Y on the left: $\displaystyle 3XY-4Y = XY+2$ Spoiler: Bring X on one side $\displaystyle 3XY-XY = 2+4Y$ Factor 2 on the right $\displaystyle 2XY = 2(1+2Y)$ 2 will cancel and divide by Y $\displaystyle X = \frac{1+2Y}{Y}$
Thankyou. After all that it was really quite simple. Practice, practice, practice. I think that is what I need.
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