Respuesta :

(f-g)(x)= 10x+3 -(-7x-4)
Distribute negative into the parenthesis
10x+3 +7x+4
Combine like terms...
17x+7

Hope it helps
Answer: 17x + 7

Explained:
1. Distribute the negative
2. Combine like terms

(10x+3)-(-7x-4)
10x + 3 + 7x + 4
17x + 7