exam Maths Puzzle Numerical Ability

x-2/2-x+2/4=1/2
lcd=4 could you explain to me how to figure this out then check?
thank you!

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exam Other Question

hi, i need some help solving this problem..
3x-5y=1
10y=6x-1

if possible express the answer in ordered pairs. Thanks! how can you write
y = -2x in standar form and how would you graph it?

Thanks!