exam Maths Puzzle Numerical Ability

Solve the inequality

1 - 6d < d + 8

Any help would be greatly aprreciated ;)

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exam Other Question

Find x in the solution of the system 3x+y=2 and 2x-3y=16.

Ths suggested answers are 2, -4, 18/11 and 10/11. Please be mindful that I do have to show my work. Thank you so very much! Solve for x: (x+3)^2/3=4