exam Maths Puzzle Numerical Ability

Perform the indicated operations. Simplify if possible.

42/7x + 40/8x

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exam Other Question

If (x) = x-3/5, then the value of f(8) equals...

(PS: Please show how you worked it out. I have been having mojor problems with these kinds of questions. Thanks.) Copy & complete the statement.
1.) A(N)( your answer) is a ratio whose denominator is 100.

Thanks! If you can can you please work fast! Thanks for all your help!Hav