I need help with this

kmj764

New member
Joined
Feb 8, 2012
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10
Problem 1: (2 x 1/a + b) / (1/a + 1 + b) = (2 + ab / 1 + a + ab)

Problem 2: (2 + 2/4a) / (1 + b/2) = (4a + 1 / ab + 2a)

They are the same pattern, aren't they?
I don't undertand why they have the results they do.
Could you please write down the omitted steps or something?

Thanks in advance.
 
To start, use * for multiplication, plus you need extra bracketing on the right side:
(2 * 1/a + b) / (1/a + 1 + b) = (2 + ab) / (1 + a + ab)

2 * 1/a + b = 2/a + b = (2 + ab) / a

1/a + 1 + b = (1 + a + ab) / a

Can you finish it now?

Thanks a lot.

Could you please do the second one as well? I tried to do it the same way but didn't work.
 
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