145k views
3 votes
Rearrange the formula y=


(x + 2)/(x - 4)
to make X the subject


2 Answers

2 votes

Answer:

x =
(2+4y)/(y-1)

Explanation:

Given

y =
(x+2)/(x-4) ( multiply both sides by x - 4 )

y(x - 4) = x + 2 ← distribute parenthesis on left side

xy - 4y = x + 2 ( add 4y to both sides )

xy = x + 2 + 4y ( subtract x from both sides )

xy - x = 2 + 4y ← factor out x from each term on the left side

x(y - 1) = 2 + 4y ( divide both sides by y - 1 )

x =
(2+4y)/(y-1)

User Kerkouch
by
8.0k points
5 votes

Answer:

Explanation:


y =(x+2)/(x-4)\\\\y*(x-4)=x+2\\\\yx-4y = x+ 2\\\\yx-4y-x = 2\\\\yx -x = 2 +4y\\\\x(y-1)=2+4y\\\\x=(2+4y)/(y-1)

User Jonny White
by
8.8k points

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