Answer:
x = 3 3/8
Step-by-step explanation:
We can use proportions to solve. Put the small triangle side over the big triangle side
6+x 12
---------- = -------------
25 32
Using cross products
32(6+x) = 12*25
Distribute
192 +32x = 300
Subtract 192 from each side
192-192 +32x= 300-192
32x = 108
Divide by 32
32x/x = 108/32
x = 27/8
x = 3 3/8