exam Maths Puzzle Numerical Ability

2.) 12-x / 4x = 1 / 12
3.) 1 / x = 4 / x-2
4.) 3 / y+1 = y / 2
5.) 2a+5 / a-1 = 3a / a-1
6.) 2 / c(c-2) = 1 / c-2
7.) 3 / 2x-2 = 2x-1 / x

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exam Other Question

Please help. The area A of a triangle with base b and height h is given by A=1/2bh. Find the area when b=20 m(meters) and h=22 m.

Thank you so much. I'm going to guess this would be the correct place for this. I need to solve something called 'the oldest geometry proof. There is a diagram. I will try to explain it. There is