Question

tính nhanh:

a) 815+/95/+(-815)+(-45)

Answer 1

\(815+|95|+\left(-815\right)+\left(-45\right)\)

\(=815+95+\left(-815\right)+\left(-45\right)\)

\(=815+95-815-45\)

\(=\left(815-815\right)+\left(95-45\right)\)

\(=0+50\)

\(=50\)

Answer 2

815+I95I+(-815)+(-45)

=815+95-815-45

=(815-815)+(95-45)

=0+50

=50