Question

Make x the subject of the formula $y=\frac{3x+4}{x-3}$.

• A. (3 + 4y)/(y + 3)
• B. (4 + 3y)/(y - 3)
• C. (4 + 3y)/(y + 3)
• D. (4 -3y)/(y + 3)

Answer 1

The correct option is B

(4 + 3y)/(y - 3)

$y=\frac{3x+4}{x-3}$

$x(y–3)=3x+4$

$xy-3y=3x+4$

$x(y-3)=4+3y$

$x=\frac{4+3y}{y-3}$