Question

What is ?/? + 2/7 =1

Answer 1

Answer:

5/7

Step-by-step explanation:

$x + \frac{2}{7} = 1 \\ \\ x = 1 - \frac{2}{7} \\ \\ x = \frac{7}{7} - \frac{2}{7} \\ \\ x = \frac{5}{7}$

Answer 2

5/7

If you add the numerators in each, they should be the same as the denominator. 5+2=7

So 7/7=1