Question

-45+(-56)=

31+(-47)=

58+(-58)=

12-(-5)=

Answer 1

\(-45+\left(-56\right)=-101\)
\(31+\left(-47\right)=-16\)
\(58+\left(-58\right)=0\)
\(12-\left(-5\right)=17\)

Answer 2

\(-45+\left(-56\right)=-45+-56=101\)

\(31+-47=-47-31=-16\)

\(58+\left(-58\right)=58-58=0\)

\(12-\left(-5\right)=12+5=17\)