Please Answer and Explain
Value of 9 - 6 + 3 × 2 + 1
Answers
Answer:
10
Step-by-step explanation:
9 - 6 + 3 × 2 + 1
first multiplication
9-6+6+1
then addition and subtraction
10
Answer:
the answer to 9/3(2+1)?
9/3(2+1)
= 93(2+1)
Grouping symbols
= 93(3)
Simplify division because it's on the left.
= (3) (3)
= 9
Step-by-step explanation:
What is the answer to 9/3(2+1) =?
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What's the answer to 9/3(2+1)?
9/3(2+1)
= 93(2+1)
Grouping symbols
= 93(3)
Simplify division because it's on the left.
= (3) (3)
= 9
EDIT: After reading some other answers, I wanted to clear up some misunderstandings.
If we take 9/3(2+1) to have multiple meanings, then we also need to have
9/3(2)+3 to mean 93(2)+3.
Clearly, in the expression 9/3(2+1) , multiplication follows the three as obvious by the left parenthesis following the 3.
Do 9/3+1 and 9÷3+1 mean the same, or are they different? They are the same.
There is a distinction between
93+1, and the following
9/3+1 and 9÷3+1 .
While
93+1 = 94,
9/3+1 = 9÷3+1 because both equal 3 + 1 = 4
However, if we, instead of writing 9/3(2+1), write 93(2+1), we help the reader to not confuse the order of operations. These expressions say the same thing: The 9 and the 3 are to be divided with one another.
Multiplication does not bind the 3 to the (2+1) because the order from left to right ensures that the division is done first.
Just try these expressions in a scientific calculator that has parentheses and order of operations built in, and you will see the results are consistent with what I've written.