i need help with1+1-2=??

Question

1+1-2=??

Answer 1

1+1=2

2-2 =0

1+1-2 = 0

Best way to do the calculation is remember PEMDAS, the order of operations

A before S means Add before subtraction

so 1+1-2 = (1+1) -2 = 2-2 = 0

actually in this particular example it doesn't matter since

1 + (1-2) = 1+(-1) = 1-1 = 0

but in other examples, it's best to follow PEMDAS

Parentheses 1st

Exponents 2nd

Multiply 3rd

Divide 4th

Add 5th

Subtract 6th