3(5-1)+1
(15-3)+1
12+1
13
[tex]\huge{\boxed{13}}[/tex]
Substitute. [tex]3(5-1)+1[/tex]
Subtract. [tex]3*4+1[/tex]
Multiply. [tex]12+1[/tex]
Add. [tex]\boxed{13}[/tex]
