Question

(/(-45)+50/+/-55/):12+/-2015/

Answer 1

\(\left(\left|\left(-45\right)+50\right|+\left|-55\right|\right):12+\left|-2015\right|\)

\(=\left(\left|-45+50\right|+\left|-55\right|\right):12+\left|-2015\right|\)

\(=\left(\left|-\left(45-50\right)\right|+\left|-55\right|\right):12+\left|-2015\right|\)

\(=\left(\left|-\left(-5\right)\right|+\left|-55\right|\right):12+\left|-2015\right|\)

\(=\left(\left|5\right|+\left|-55\right|\right):12+\left|-2015\right|\)

\(=\left(5+55\right):12+\left|-2015\right|\)

\(=60:12+\left|-2015\right|\)

\(=5+\left|-2015\right|\)

\(=5+2015\)

\(=2020\)