exam Maths Puzzle Numerical Ability

When a number was multiplied by 4 and then product decreased by 17, the result was 1 less than three times the nunber. Find the number. (show your work)

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exam Other Question

I am having trouble answering this question, can you help? When solving an inequality, when is it necessary to change the direction of the inequality symbol? Can you give a real life example of this? Thank You please help me to solve this: 1/81=27^(x-2)