9.46除以4.5+18.2 16分之13(乘17-13分之9)

问题描述:

9.46除以4.5+18.2 16分之13(乘17-13分之9)

9.46除以4.5+18.2
=2+23/225+18+1/5
=20又98/225
16分之13(乘17-13分之9)
=13/16*17-13/16*9/13
=13+13/19-9/16
=13又1/4
=13.25

9.46÷4.5+18.2
=473÷225+91÷5
=(473+91×45)/225
=(473+4095)/225
=4568/225
13/16×(17-9/13)
=(13*7)/16-13/16*9/13
=91/16-9/16
=(91-9)/16
=41/8