Answer:
this means there is no answer to the problem
Step-by-step explanation:
So do the opposite of the answer like for example 4 +3\2 and your answer is y
the you do the rest
Steps:
18 x 2
What is that?
You can also think of it as 9 x 4 if that is easier
Then whatever you got for that, add 21 then subtract 12 and add 1