Question 820934
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Hi,
y=-3/4 and   x=5/8
{{{2y-x= 2(-3/4) - (5/8) = (-6/4) - (5/8) = highlight(-12/8) - 5/8 = -17/8 }}}
                        Note {{{(2/2)(-6/4) = highlight(-12/8)}}}