Answer:
Step-by-step explanation:
To do this we will use PEMDAS (Parenthesis Exponents Multiplication Division Addition and Subtraction).
3+2(5)-{-7}=6
//multiply
3+10-{-7}=6
//add
13-{-7}=6
//subtract (but its a negative so you will add it)
20=6
nope. won't work (unless the equation is supposed to add the negative and it was just written down wrong here)
