Answer: r - 24
Step-by-step explanation:
Combine like terms;
Solve the quadratic equation;
Simplify;
Let, Fiona's age = x
Darwin's age = 2x+6
Then, 2x+6 = 50
2x = 44
x = 22
So, your answer is 22
Hope this helps!
That means to explain your factors in into detail while also using the factors as exponents, hope that helped