Answer:
[tex]Exact form:b=-\frac{8}{11}\\Decimal form: b=-0.72727272727272727272[/tex]
Step-by-step explanation:
[tex]-4(b+3)-12=2b-16+5b[/tex]
[tex]-4b-12-12=2b+5b[/tex]
[tex]-4b-24=7b-16[/tex]
[tex]-4b=7b+8[/tex]
b=-1/11 or -0.72
