Question

answer pllz..............​

Answer 1

Answer:

63 or 36

Step-by-step explanation:

let the no. be x,

and x+3,

7(10(x)+1(x+3))=4(10(x+3)+1(x))

7(10x+ x+3)=4(10x+30+x)

7(11x+3)=4(11x+30)

77x+21=44x+120

77x-44x=120-21

33x=99

x=99/33

x=3

x+3=3+3=6

63 or 36