Question 996291
.
Let A be the number of Andre's home runs and L be that of Larry's. Then


{{{system(A + L = 10,
A = 2L + 4)}}}.


To solve, substitute the second equation into the first one. You will get


(2L + 4) + L = 10,


3L = 10-4,


3L = 6,


L =2


A = 10 - L = 10 - 2 = 8.