\(\left(-50+19+143\right)-\left(79+25+48\right)\)
\(=-50+19+143-79-25-48\)
\(=-31+143-79-25-48\)
\(=112-79-25-48\)
\(=33-25-48\)
\(=8-48\)
\(=-40\)
\(\left(-50+19+143\right)-\left(79+25+48\right)\)
\(=-50+19+143-79-25-48\)
\(=-34+64-\left(-23\right)\)
\(=53\)
hok tốt