Question

one fourth of a no plus three is equal to 21​

Answer 1

Answer:

let the no be x

Atq,x/4+3=21

x/4=18

,x=72

check

72/4+3

18+3

21=21

LHS=RHS

Answer 2

Answer:

1x/4+3=21

1x/4=18

1x=18×4

1x=72

therefore the no. is 72