Question 912099
Write these equations in standard form with integer coefficients:

1/4x - 2/3y = 3

5/6x + 2/7y = 4
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Is it
{{{1/(4x) - 2/(3y) = 3}}}

{{{5/(6x) + 2/(7y) = 4}}} ?
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Assuming you mean
(1/4)x - (2/3)y = 3
Multiply by 12
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(5/6)x + (2/7)y = 4
Multiply by 42
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We shouldn't have to make assumptions or guess at what you mean.
Parentheses are free. Use them.