How does 19/15 become a a mixed number

well, first off, let's divide 19 by 15, hmmm 19 ÷ 15  gives us a quotient of 1, and a remainder of 4.

for a mixed fraction, we put the quotient upfront and the remainder as the new numerator.

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this