help me rn because i said so

Question

There are two red jars of marbles and one blue jar of marbles. Jars of a certain color have the same number of marbles in them. There are

47

marbles in total. The difference between the number of marbles in a red jar and the number of marbles in a blue jar is

13.

Find the number of marbles in each type of jar.

Answer 1

2r + b = 47

r-b = 13

b = r-13

2r +r-13 =47

3r = 47+13 = 60

r = 60/3 = 20 marbles in each red jar

b =20-13 = 7 marbles in the blue jar

2(20) + 7 = 47