It's 2. You use order of operations for this one.
Multiplication comes before Addition and Subtraction.
7-3*2+1
7-6+1
1+1
=2
Yes exactly I mean that, "order of operations". (+) is must before (-) right? 1 (*), 2 (+), 3 (-). First 3*2, next 6+1, then 7-7.
Okay so if the problem has multiplication you do that first.
Your problem is 7-3*2+1=2
so 3*2=6 and then you will have 7-6+1=2, then you subtract 7 from 6 and get 1, and finally add 1 + 1 and you get the answer 2.
(7) + (-6) + (1)
or
7 - (6 - 1)
or
7 + 1 - 6
You neglected the negative sign by making it 7-7. You're not adding 1 to 6, you're supposed to add 1 to -6.
For addition/subraction, there is no order since you're doing the exact same thing. 1 + 1 can be said as 1 - (-1). Both will be 2. Same goes with multiplication and division. Doesn't matter which of the two goes first, as long as multiplication/division goes before addition/subtraction.