Problema Solution
for all real numbers a and b, define the operation # as follows:
a # b = 2a - b
given a = 3 and a # b = 1, what is the value of b?
Answer provided by our tutors
a # b = 2a - b and for a = 3 we have a # b = 1 that is 3 # b = 1. This means for a = 3, if plug it into 2a - b the value is 1:
2*3 - b = 1
6 - b = 1
b = 6 - 1
b = 5