exam Maths Puzzle Numerical Ability

Use a commutative law to find an equivalent expression.
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Hi everyone I am back!! Can someone please help me with this?? I am once again taking an algebra class and not doing to well.

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solve

14 over -5y

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which of the ordered pairs are solutions for x+3y=10
(7,1),(10,0),(1,-3),(-8,6)