a,(-123)+|-18|+23+(-18)
= [(-123)+23]+[(-18)+18]
= -100
- Hok tốt ~ K mk nhak.
c,124.23+134.17-40.34
= 124.23+67.2.17-40.34
= 124.23+67.34-40.34
= 124.23+34.27
= 2852+918
= 3770
- Hok tốt ~ K mk nhak
d,325-5.[4^3-(27-5^2):1^18]
= 325-5.[64-(27-25):1]
= 325-5.[64-2]
= 325-5.62
= 325 - 310
= 15
-Hok tốt ~ K mk nnhak.
\(a,\left(-123\right)+\left|-18\right|+23+\left(-18\right)\) \(b,124.23+134.17-40.34\)
\(=\left(-123\right)+18+23+\left(-18\right)\) \(=2852+2278-1360\)
\(=\left[\left(-123\right)+23\right]+\left[18+\left(-18\right)\right]\) \(=5130-1360\)
\(=\left(-100\right)+0=-100\) \(=3770\)
\(c,325-5.\left[4^3-\left(27-5^2\right):1^{18}\right]\)
\(=325-5.\left[64-\left(27-25\right):1\right]\)
\(=325-5.\left[64-2:1\right]\)
\(=325-5.62\)
\(=325-310\)
\(=15\)
\(a.\left(-123\right)+|-18|+23+\left(-18\right)\)
\(=\left(-123\right)+18+23+\left(-18\right)\)
\(=\left[\left(-123\right)+23\right]+\left[18+\left(-18\right)\right]\)
\(=\left(-100\right)+0=-100\)
