Answer:
James, approximately has:
5 pairs of running shoes
7 pairs of basketball shoes
Step-by-step explanation:
3s = 4b eq. 1
s + b = 12 eq. 2
from eq. 2:
s = 12 - b eq. 3
Replacing eq. 3 in eq. 1:
3(12-b) = 4b
3*12 + 3*-b = 4b
36 - 3b = 4b
36 = 4b + 3b
36 = 7b
b = 36/7
b = 5 (aprox)
from eq. 2
s + 5 = 12
s = 12-5
s = 7 (aprox.)
