Respuesta :

Parenthesis first

19- (4+2) - 15 / 3

19-(6)-15 / 3

then division

19-6-5

then subtraction from left to right. 

19-6= 13
13-5= 8

your final answer is 8
the answer is 8. Using PEMDAS is really helpful and you can come up with sayings so like I always used "Please Excuse My Dear Aunt Sally" so parentheses, exponents, multiplication, division, addition, subtraction.