exam Maths Puzzle Numerical Ability

Reduce the given expression to lowest terms
-v - 1/ -7

??? is it v + 1/ 7

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exam Other Question

Working on a logarithm problem but having difficulty. Thanks!

Find the value of x for both

log41=x

log3 x=5

on the log4, the four is just below the log. Hope that is clear enough.Thanks!
I am guessing find the zeros of this and solve.
g(x)=2x^3-x^2-10x-5