Question

Find x if (1 + x ): (3 + x): (6 + x)
​

Answer 1

Answer:

x=3

Step-by-step explanation:

$\frac{1 + x}{3 + x} = \frac{3 + x}{6 + x}$

$(1 + x)(6 + x) =( 3 + x)(3 + x)$

${x}^{2} + 7x + 6 = {x}^{2} + 9 + 6x$

$7x + 6 = 6x + 9$

$7x - 6x = 9 - 6$

$x = 3$