Question

The value of(-19) +-20)+(-18) + 21 is​

Answer 1

Answer:

-19-20-18+21 => -19-20+3 =>-19-17= -36

Answer 2

Step-by-step explanation:

(-19)+(-20))+(-18)+21

(19-20)+(-20)+21

(-1)+(-20)+21

20+1+21

21+21

42