Answer:
The brother would be 13
Step-by-step explanation:
14 - 6= 8
There's an 8-year difference
21 - 8= 13
Answer:
10
Step-by-step explanation:
LN = 4 + x - 8 = x - 4
LS = 3 + x - 5 = x - 2
By intersecting secants theorem:
![LM\times LN = LK\times LS \\ \\ 4(x - 4) = 3(x - 2) \\ \\ 4x - 16 = 3x - 6 \\ \\ 4x - 3x = 16 - 6 \\ \\ x = 10](https://tex.z-dn.net/?f=LM%5Ctimes%20LN%20%3D%20LK%5Ctimes%20LS%20%5C%5C%20%20%5C%5C%20%204%28x%20-%204%29%20%3D%203%28x%20-%202%29%20%5C%5C%20%20%5C%5C%204x%20-%2016%20%3D%203x%20-%206%20%5C%5C%20%20%5C%5C%204x%20-%203x%20%3D%2016%20-%206%20%5C%5C%20%20%5C%5C%20x%20%3D%2010)
You can divide the 3x-3y+15 by 3 to get the variables alone... hope dis helps :)