Question

How do I get the answer for 1/2+(2/3 / 3/4) - (4/5 * 5/6) = The way I've worked it is Divide first so 2/3 / 3/4 introverted and multiplied is 8/9 then 4/5*5/6 is 20/30 so now I have 1/2 + 8/9 - 20/30 The common denominator is 18 but how do I get the numerators?

Answer 1

first reduce 20/30

Answer 2

20/30 reduced is 2/3

Answer 3

so 1/2 + 8/9 -2/3 CD is 18

Answer 4

I know that 2*9 is 18 so is 1/2 9/18 ?