Respuesta :
Answer:
f =27
Step-by-step explanation:
[tex]12 = f - 13-2[/tex]
Collect like terms and simplify
[tex]12+13+2 = f\\27 =f[/tex]
Switch sides
[tex]f = 27[/tex]
Answer:
27
Step-by-step explanation:
12=f-13-2
12=f-15
12+15=(f-15)+15
27=f-15+15
27=f
f=27