Respuesta :

Answer:

18

Step-by-step explanation:

25=7+r     25-7=18     7-7=0

r=18 Do you understand? I really hoped I helped. I was in your position when i was learning that.

Rutesh
Answer = r = 18
Transposing 7 to LHS
r = 25-7
r = 18
Verification
25 = r + 7
25 = 18+7
25 = 25
Hence, LHS = RHS