Question

help 7-(-21) and can you tell me how you got the answer? thank you

Answer 1

what do you mean?

Answer 2

how do u find the answer? is it a negative times a negative.

Answer 3

yes, signs rules
if the signs are the equal, their product is " + "
if the signs are different, their product is " - "

\(\bf - \times - = +\\
7-(-21) \implies 7-1(-21) \implies -1 \times -21 = +21\\
7-(-21) \implies 7 + 21\)

Answer 4

so the answer would be 28 correct?

Answer 5

yes

Answer 6

thank you soooooo munch

Answer 7

yw