Deb a pair of shoes for 60$ and 6 pairs of socks. the total was 78 how much did each pair cost?

if x was the price of the only one pair of socks.

lets put it like this

60+6 (x) = 78

60+6 (x) - 78 - 78

6 (x) - 18 = 0

6 (x) = 18 and then (x) : being the price of only one of the pairs of shocks is $3 and for the 6 pairs he paid $18