exam Maths Puzzle Numerical Ability

How do you subtract this rational expression: 5n/3 - 4n/3? whats the answer?

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exam Other Question

2/3a+2=1/3(4a+1) Solve the following system of linear inequalities by graphing.
x + 2y equal to or less than 3
2x - 3y equal to or less than 6

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