WIll STAR AND FAN! Help please
Ok so I have the answer for this question but i dont understand how it was gotten
$$A=\frac{ 1 }{ 2 }h(B+b)$$ solve for B
answer is $$B= \frac{ 2A-bh }{ h }$$
basically what is did was multipy both b's by 1/2 h but that gave me a wrong answer, anyone know how the right answer was gotten? like the steps?

Question

WIll STAR AND FAN! Help please
Ok so I have the answer for this question but i dont understand how it was gotten
$$A=\frac{ 1 }{ 2 }h(B+b)$$ solve for B
answer is $$B= \frac{ 2A-bh }{ h }$$
basically what is did was multipy both b's by 1/2 h but that gave me a wrong answer, anyone know how the right answer was gotten? like the steps?

anonymous · Answer

multiply by 2
divide by h
subtract $b$

anonymous · Answer

you get 
$$B=\frac{2A}{h}-b$$

anonymous · Answer

you will get the answer you wrote above if you put it over one denominator

anonymous · Answer

@satellite73 ok but why multiply by 2? theres no 2 anywhere

anonymous · Answer

@satellite73