exam Maths Puzzle Numerical Ability

Hello,
I am having a problem with finding the answer to this question.
Please help.
10x-1/4=9x+3/8

Thanks,
Patricia

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exam Other Question

Which of the following points is included in the graph of : -7y+3x<0?

a. (-6,-3)
b. (3,-2)
c. (7,4)
d. (5,-3) 2. A student thinks that P(n) = n^3 - n is always a multiple of 6 for all natural numbers n. What do you think? Provide a mathematical argument to show that the student is correct or a counter example to show that the student is wrong.