(19分之1加十七分之2)x19x17简便运算

2025-06-28 00:01:36
推荐回答(4个)
回答1:

(1/19+1/17)*19*17
=(1/19)*19*17+(1/17)*19*17
=17+19
=36

回答2:

(1/19+2/17)*19*17
=1/19*19+2/17*17*19
=1+2*19
=39

回答3:

=19分之1×19×17+17分之2×19×17
=17+38
=55

回答4:

(1/19+2/17)*19*17
=1/19*19*17+2/17*17*19
=17+2*19
=17+38
=55