Answer:
true
Step-by-step explanation:
it is because 1 and 3 in set A are in sat B
n+7
When we have any unknown quantity, we can call it mostly x,y,z
so, here
Let take an unknown number = n
then
we need to do here " sum of a number and 7 in algebraic form"
so, it becomes
n + 7 (Answer)
