exam Maths Puzzle Numerical Ability

(a) x+1/2=x+2/3
(b) 2x+3/x=2/3
(c) 3/x=2/1-x
(d) 2-x/3=2x-1/5
(e) 2x-3/4=2/3x
(f) x-1/2=2-x/3
(g) 1-k/3=k+2/2
(h) 2a-3/4=3-a/3
(i) 3/4=t/t+2
(j) 3/4=t/t+2

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exam Other Question

Geometry figures are often represented by the letters that idendify each vetex. Determine the number of ways that each figure can be named with the following letters: A,B,C,D,E,and Please tell me if I have correctly simplified the following equation.
sqrt20/5-1/sqrt5 written as a fraction the 20 is under the sqrt and over 5 subtracted from 1 over sqrt 5.

I get 1 over 5 sqrt 5.