(-18.63)+(-6.15)+18.2+6.15+0.43怎么解

问题描述:

(-18.63)+(-6.15)+18.2+6.15+0.43怎么解

(-18.63)+(-6.15)+18.2+6.15+0.43
=-18.63-6.15+18.2+6.15+0.43
=(-18.63+0.43+18.2)+(-6.15+6.15)
=-18.2+18.2
=0