A more than b

What is 5 1/7 more than 2 3/7?

Correct answer:

x =  7.5714

Step-by-step explanation:

$$\begin{gathered} a=5{\displaystyle \frac{1}{7}}=5+{\displaystyle \frac{1}{7}}={\displaystyle \frac{5\cdot 7+1}{7}}={\displaystyle \frac{36}{7}}\doteq 5.1429 \\ b=2{\displaystyle \frac{3}{7}}=2+{\displaystyle \frac{3}{7}}={\displaystyle \frac{2\cdot 7+3}{7}}={\displaystyle \frac{17}{7}}\doteq 2.4286 \\ x=a+b=5.1429+2.4286={\displaystyle \frac{53}{7}}=7\frac{4}{7}=7.5714 \end{gathered}$$

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