book Maths Puzzle Numerical Ability

the sqaure root of 2x+5 = the sqaure root of 3x+1

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book Other Question

Phil & phyllis are siblings. phyllis has twice as many brothers as she has sisters. phil has the same number of brothers as sisters. how many girls and how many boys? What is the solution to the system of equations x(squared) -x+6= y and 2x+2y=36?
Also how do you get your answer?