The number is 5
1) Let's call this number by "n", so we can write out the following:
[tex]4(n-3)=3n-7[/tex]Note that four times the difference makes reference to the operation.
2) So let's move on, applying the Distributive Property
[tex]\begin{gathered} 4(n-3)=3n-7 \\ 4n-12=3n-7 \\ 4n-3n-12=3n-3n-7 \\ n-12=-7 \\ n=12-7 \\ n=5 \end{gathered}[/tex]As we can see we had to isolate n on one side.
3)Hence, the answer is 5