exam Maths Puzzle Numerical Ability

The sum of the ages of a married couple is 60. If three times the age of the husband is nine less than four times the age of the wife, how old are they now?

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exam Other Question

Can you please tell me if this is figured right?

Simplify: ( x/x^2 – 9 ) – ( x/x^2 + 2x – 15 )

(1 - 9) - (3x - 15)
-8 - - 12
-8 + 12
= 4
can you explain this to me please

solve by completing the squaqr root property.

x^2 + 8x + 13 = 0

thank you
julie