Question

Which mathematical expression results in an answer of twenty-one?
a.) (–7)(–3)
b.) 42 divided by (–2)
c.) –6 – 15
d.) –9 + (–12)
i dont understand

Answer 1

A. -7*-3 =21

double negative signs=positive. :) @Ryan5757

Answer 2

@uri thanks

Answer 3

@uri how do i do that?im new

Answer 4

A