Mark M. answered 01/18/17
Tutor
5.0
(278)
Mathematics Teacher - NCLB Highly Qualified
a represents his age
-a + 40 = 28
-a = -12
a = 12
April B.
asked 01/18/17
Mark M. answered 01/18/17
Mathematics Teacher - NCLB Highly Qualified
Get a free answer to a quick problem.
Most questions answered within 4 hours.
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.