Respuesta :

Answer:

c=15. 11 is x = 35

Step-by-step explanation:

Start by subtracting 10 from 25

25-10 = 15

Check:

10 + 15 = 25

Therefore, the answer is c = 15

20 + 15 is 35

Check with 35 - 15 = 20

Therefore, x = 35 is the answer

Answer:

15

Step-by-step explanation:

do 25-10=15