book Maths Puzzle Numerical Ability

What makes Algebra so important?

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book Other Question

If the exterior angles of a convex octagon are x+13, 2x-1, 2x+6, 2x+12, 2x-17, 3x-4, 3x-10, and 4x, calculate the smallest of the eight angles.

choices
A) 19 degrees
B) 21 degrees
C) 32 degrees
D) 37 degrees Please help me solve this problem: (x-3)(x+2)= (2x+5)/4