Use order of operations and a little bit of trial and error. PEMDAS Parenthesis exponents multiplication division addition subtraction. place parenthesis around two sets of numbers and then carry out the order of operations to get the answer. If you still need help leave a comment.
Trenches were dug in a zigzag pattern so that if an enemy entered the trench, he could not fire straight down the line. ... The main trench lines were connected by communicating trenches, allowing for the movement of messages, supplies, and soldiers and were lined with barbed wire.
Yes i do, what you need help with