Asked by Akingbade

An operation bar v on the set of real nvmbarsis defined by a bar b=3a+b-1 all over5 for all a,bER.
a. Determine whether or not the set R is closed vnder bar v
Answered by Akingbade
Response not known
Answered by oobleck
since R is closed under addition (and thus by subtraction) and under multiplication and division where the divisor is not zero, what do you think?