exam Maths Puzzle Numerical Ability

please help me with this problem, it was given to us without having tackled it first. kindly please solve this. thank you.

3x - 2 / 4 = 5x / 4

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exam Other Question

How do you find the GCF and LCM for 90xy^2z^3, 300x^2y^2z^2, 120z^4? Help! I need help with a couple of problems.

1. Solve the inequality. Give the solution set in interval notation and graph it. x^2-2x-3>0
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2.Find the real number c such that x^2-2/3x+c is a perfect square trinomial.