exam Maths Puzzle Numerical Ability

Solve the equation

3(y-7) = y +3

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exam Other Question

Please help with me this problem.

Simplify the expression; making sure there are no negative exponents

(6r^-1)^2(2r^-4)
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r^-5(r^2)^-3 Find three consecutive integers such that the sum of the first and second is four times the third decreased by 11.