exam Maths Puzzle Numerical Ability

Can someone help me on this?

I need to subtract:

7/9 - 1/6

Thanks,
Ashley

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exam Other Question

A man invested $2500, part at 4%. His total annual income was $110. How much did he invest at each rate? A study reported that in a random sampling of 100 women over the age of 35 showed that 8 of the women were married 2 or more times. In a group of 5,000 women based on the study results, how many would likely be married 2 or more times?