Lol. Here I am.. Saying whatever the heck I want. :)
Answer:
54
Explanation:
you have to use the principal of BODMAS
12 + 23 x 2 + 3 - 7
12 + 46 + 3 - 7
61 - 7
54
Maritime transportation became less important to developed countries
in the 1950s, planes became a more popular mode of transportation, so traveling by sea was not as popular to developed countries
