Question

509-(-19)+(-19)+20+(-20)​

Answer 1

Answer:

509

Explanation:

=509-(-19)+(-19)+20+(-20)

=509+19-19+20-20

=509

Suggestions:

you just need to remove the brackets by seeing what is in front of bracket and in the back of bracket. If both the signs are same then give '+' but if both the sides are different then give '-'.

Answer 2

Answer:

Step-by-step explanation:

509-(-19)+(-19)+20+(-20)

509+19-19+20-20

509+19+20-19-19

548-38=510