Hello
x
x +5
x + 7
x + x + 5 + x + 7 = 21
3 x = 21 - 12
3 x = 9
x = 3
3 , 5 et 7 pouces
Answer:
It is 20
Step-by-step explanation:
Use your fingers if necessary
2/3 , 3/4 7/12 there you go
I believe that this is correct if anything is unclear/blurry just ask and i will tell u what i wrote