Answer:
210
Step-by-step explanation:
Your answer is 210. Assuming that the correctly formatted question is (7x10) 3, you would solve the problem like this.
First, always start with what's in parenthesis.
(7x10) = 70
Now that we have 70, we can multiply it by the remaining number, 3.
(70) 3 also known as 70x3 = 210.
