Question

Evaluate 3+ (-4) please help

Answer 1

No problem. Since the - and + cancel and become a -, you get
3-4
which is -1

Hope this helped.

Answer 2

3 + (-4) when you add or multiply or divide here are some things you should remember so you can understand it better

(-)(-) = +

(+)(-)= -

(+)(+)= +

(-)(+)= -

so now that you know this we can work on the equation

since there is a positive and a negative the answer has to be negative number and it automatically turns it to subtraction instead of addition so now its like  this 3 - (-4) so now subtract 3 - 4 which is 1 but since the 4 is a negative then the answer goes to -1

hope i helped i just want to understand it so you can do this on your on next time

goodluck