Answer
$\frac{3y-28}{7}$
Work Step by Step
3/7 of y makes 3y/7, as you can multiply the two together.
Convert 4 to a fraction with a denominator of 7 to get 28/7.
Combine the two parts to get 3y/7 - 28/7 = $\frac{3y-28}{7}$
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