exam Maths Puzzle Numerical Ability

please help me find the inverse of this equation- 2x=5/6

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exam Other Question

May I have some help with this inequality?

Solve the nonlinear inequality. Express the solution using interval notation.


(x + 3)(x + 8) < 0
Angle A and angle B are supplementary angles and angle A is 15 degrees less than four times angle B. Find the 2 angles.