exam Maths Puzzle Numerical Ability

can you help me work out 3x + 9 = 5

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exam Other Question

i need to solve this equation for x:
x^3+ 7.07x^2 + 2.72x -14.75=0
i tried factoring out an x and then applying the quadratic equation but it doesnt seem right please guide me in the right direction. thank you One-third of the sum of two consecutive integers is 6 less than the smaller integer. Find the integers.