Keiko, aldo, and henry sent a total of 50 text messages during the weekend. aldo sent 2 times as many messages as henry. keiko sent 10 fewer messages than henry. how many messages did they each send?

K + a + h = 50

a = 2h

k = h - 10

(h - 10) + 2h + h = 50

4h - 10 = 50

4h = 50 + 10

4h = 60

h = 60/4

h = 15 < = = = Henry sent 15

a = 2h

a = 2 (15)

a = 30 < = = = Aldo sent 30

k = h - 10

k = 15 - 10

k = 5 < = = = Keiko sent 5