Find the value of x.

Answer:
x = 28
Step-by-step explanation:
The ratios of corresponding sides are equal, that is
[tex]\frac{12}{8}[/tex] = [tex]\frac{x-7}{14}[/tex] ( cross- multiply )
8(x - 7) = 168 ( divide both sides by 8 )
x - 7 = 21 ( add 7 to both sides )
x = 28