3( x + 2) = 12
x + 2 = 4
a) What step did the student use to get from the first line to the second line?
b) Do you think that this way of starting this problem is (a) a very good way; (b) OK to do, but not a very good way; (c) not OK to do?
c) Explain your reasoning
This task assesses students' ability to solve equations using non-conventional methods.