qx / ta = T2 - T1 make T2 the subject.
My question is when I add T1 to both sides why does it move as +T1
and not T1/1?
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Because the opposite of subtracting a number is adding a number...
Oh, well you COULD do it as T1/1, since it's the same as T1, but you don't need to. It would really only come in handy if you plan to create a common denominator...
Prove it can you give me an example of where I would need a common denominator.
Try to solve for u:
1/u + 1/v = 1/f
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