Question

guys please answer with explaination​

Answer 1

Answer:

y=8

Step-by-step explanation:

y-5+y=21

then 2y= 21-5=16

so y=8

Answer 2

Answer:

13 is the value of y

Total=21cm

which is also y-5 + y

by forming equation we get,

y-5 + y = 21

2y = 21 + 5 (the sign will change when it is transferred from lhs to rhs)

2y = 26

y = 26/2

y = 13

so, y - 5 = 13 - 5

= 8

and y = 13