exam Maths Puzzle Numerical Ability

Find The Sum or Difference.

23. 5/8 - 3/4

Any help with this equation would be GREATLY</b> appreciated.

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exam Other Question

true or false: it is not possible to multiply a 3*4 matrix with a 4*3 matrix. thanks! Assume that 420 members of the House are available to vote. How many votes are necessary to make up a majority, which is anything over ?