Answer:
- 3
Step-by-step explanation:
Given
[tex]\frac{1}{2}[/tex] = [tex]\frac{a+b}{a-b}[/tex] ( cross- multiply )
2(a + b) = a - b
2a + 2b = a - b ( subtract a from both sides )
a + 2b = - b ( subtract 2b from both sides )
a = - 3b ( divide both sides by b )
[tex]\frac{a}{b}[/tex] = - 3
