Question

What is the value of x?

Answer 1

Answer:

$\Large \boxed{\sf x=9}$

Step-by-step explanation:

A transversal that is parallel to a side in a triangle defines a new smaller triangle that is similar to the bigger triangle.

$\displaystyle \frac{9+72}{9} =\frac{3x-20+56}{3x-20}$

Solve for x

$(9+72)\times(3x-20)=(3x-20+56)\times(9)$

$243x-1620=27x+324$

$216x=1944$

$x=9$

Answer 2

Answer:

the value of x is 9. look it once.