3.1416×6.495+3.1416×(-5.495)

问题描述:

3.1416×6.495+3.1416×(-5.495)

3.1416×6.495+3.1416×(-5.495)
=3.1416×(6.495-5.495)
=3.1416×1
=3.1416

3.1416×6.495+3.1416×(-5.495)
=3.1416×﹙6.495-5.495﹚
=3.1416×1
=3.1416