exam Maths Puzzle Numerical Ability

4x+5y=-16
-2x+5y=12

Solve for x and y.

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exam Other Question

hey,
please i have a question on one of my word problem,

what is the smallest possible total of a number and its square?

i will be waiting for the answer,

and thank you Can someone help me here?

I need to solve the system by addition or substitution

3x - 4y = 8
6x - 2y = 10

Thanks,
Jamie