Explanation:
When you perform long division of 50 by 7, you find that the quotient is 7 and the remainder is 1. The remainder expressed over the original divisor is the fraction. (In some cases, that fraction may need to be reduced.)
That is ...
[tex]\dfrac{50}{7}=\dfrac{49+1}{7}=\dfrac{7\cdot 7+1}{7}\\\\=\dfrac{7\cdot 7}{7}+\dfrac{1}{7}=7+\dfrac{1}{7}=7\frac{1}{7}[/tex]
