exam Maths Puzzle Numerical Ability

Solve the system using the substituion method.
2x - 5y = 9
-3x + y = -7

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exam Other Question

I am having a problems with these two problems and wondering if there was someone that could guide me on how to solve this problem. Thank you

Solve the following equation for X.
2/5=X-2/20
graph

F(x) = x-2 there is a line under x-2
x+4