exam Maths Puzzle Numerical Ability

Solve each of the following systems by substitution.
McGraw Hill 6th edition, 8.3 # 16.
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5x-2y=-5
y-5x=3

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exam Other Question

My Equation is to:Write an inquality represented by the graph

*=Negative

<--*-6--*-5--*-4--*#-3#--*-2--*-1--*-0 >
#_#=The main number

Any help with this problem Greatly a The difference between two positive nubers is 5 and the sum of their squares is 233. What are the numbers?