Perform the operation and write the answer fully 3/7 / 4/5​

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?