book Maths Puzzle Numerical Ability

please help me solve this: 1/2 + 4m = 3m - 5/2 And if possible show the check.

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book Other Question

If f(x) = x3 + 4 and g(x) = x + 3, find [g � f](2) Without the use of a calculator, list the numbers 2^1/2, 3^1/3, 5^1/5 in order from largest to smallest.