43.2*22.8+86.4*38.6怎么算

问题描述:

43.2*22.8+86.4*38.6怎么算

43.2*22.8+86.4*38.6
=43.2*22.8+43.2*2*38.6
=43.2*22.8+43.2*77.2
=43.2*(22.8+77.2)
=43.2*100
=4320