3 2/7+1 4/7

shaniab we also have to simplify and show!

$$3 \frac{2}{7} + 1\frac{4}{7}$$

now multiply the whole number with the denominator and add the numerator!

$$=\frac{23}{7} + \frac{11}{7}$$

as we have same denominators well just add the numerators!

$$=\frac{34}{7}$$

now i hope you can convert it into decimal!

4 6/7 is the answer.