Question

Find (a+b)÷(a-b) if a =1/2 and b=2/3

Answer 1

Answer:

$\frac{a \: + \: b}{ a \: - \: b} \frac{ \frac{1}{2} + \frac{2}{3} } { \frac{1}{2} - \frac{2}{3} } \\ = \frac{3 + 4}{3 - 4} \\ = - 7$