exam Maths Puzzle Numerical Ability

Find a number that is 68 greater than three times its opposite

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exam Other Question

Please help with this one i keep getting stuck.
(4-4i)-(-3-2i) How to translate into equations to be solved? Thanks!

In a triangle, the sum of the interior angles is 180 degrees. If angle A is three times as large as angle B, and angles B and C sum to 90 degrees, what is the measure of each angle?