Susana=s
maria=m
m= 3s/5
s+m=56
s+(3s/5)=56
(5s+3s)/5=56
8s=56*5
8s=280
s=280/8
s=35
35 --->5/5
x ---> 3/5
x= (3/5)*35 / (5/5)
x=21
edad de maria= 21 años
Answer:
i'm not sure what is it ?
Step-by-step explanation:
Answer:
jose
Step-by-step explanation:
2.00 ÷ 20 = 10 c
1.50 ÷ 10 = 15 c
Answer:
Question 3: 
Question 4: 
Question 5: 
Step-by-step explanation:
Question 3:

Question 4:
sign flips when r switches sides
Question 5:
