Answer:
b=1
Step-by-step explanation:
[tex]\sf -11 + 3(b + 5) = 7[/tex]
First, let's regroup, terms,
[tex]\sf 3(b+5)-11=7[/tex]
Add 11 to both sides,
[tex]\sf 3(b+5)=7+11[/tex]
Simplify, 7+11 = 18,
[tex]\sf 3(b+5)=18[/tex]
Now, divide both sides by 3,
[tex]\sf b+5=\frac{18}{3}[/tex]
Simplify, 18/3 = 6,
[tex]\sf b+5=6[/tex]
Subtract 5 from both sides,
[tex]\sf b=6-5[/tex]
[tex]\sf b=1[/tex]
Hope it helps! :)