Solve for y
y = \frac{31}{7} = 4\frac{3}{7} \approx 4.428571429
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3+28=7y
Multiply 7 and 4 to get 28.
31=7y
Add 3 and 28 to get 31.
7y=31
Swap sides so that all variable terms are on the left hand side.
y=\frac{31}{7}
Divide both sides by 7.
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