exam Maths Puzzle Numerical Ability

1: For questions 1 – 4: Find the equation of the inverse for each of the following which is one-to-one. Solve each for y.

2x + 3y = 6
y = (6-3x)/2
y = (-3x)/

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exam Other Question

[3(4-9)-2]-[6-(4-3)]=

Can some body please help me with this problem. I do not understand at all.
8pq^2(2pq-3p+5q)

please help me solve this.