exam Maths Puzzle Numerical Ability

Have you any suggestions on how to work this problem to its simplest form? thanks 2x2 - 26x = 60

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exam Other Question

x/6 - x/8 = 1 In the xy-plane, line l passes through the origin and is perpendicular to the line 4x+y=k, where k is a constant. If the two lines intersect at the point (t,t+1), what is the value of t?