Respuesta :

S1NGH

Answer:

[tex]b=-12[/tex]

Step-by-step explanation:

[tex]20-\frac{b}{4} =23[/tex]

→ Minus 20 from both sides

[tex]-\frac{b}{4} =3[/tex]

→ Multiply both sides by -4

[tex]b=-12[/tex]