2 answers:
5b-12+2b=16
7b=28
B=4
Hope this helped!
-Twixm
5b-12+2b=16
Move -12 to the other side of the equal sign by adding 12 to both sides.
5b+2b=16+12
Add like terms.
7b=28
Divide both sides by 7.
b=4
~Hope I helped!~
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