exam Maths Puzzle Numerical Ability

How do I solve for z?

1/3z+15+4=8/z+5

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exam Other Question

the numerator of a certain fraction is 2 more than the denomenator. if 1/3 is added to the fracgion, the result is 2. find the fraction A-8 Solve each oblique triangle. b=19.3 m, c=28.7 m, A= 57.0 degrees.