exam Maths Puzzle Numerical Ability

How do I solve this problem using system of equations?

x^2 + y^2 = 25
y^2 + x = 5

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exam Other Question

Division can be used to show that 7 over 40 can be written as what kind of decimal? Craig is 24 years younger than his mother. Together their ages total 56 years. How old is each person?