5⼀17x6⼀19+5⼀19x13⼀17怎样简便计算?请问有谁会

2025-03-01 13:28:31
推荐回答(4个)
回答1:

回答2:

回答3:

5/17x6/19+5/19x13/17
=5/17x6/19+5/17x13/19
=5/17x(6/19+13/19)
=5/17x1
=5/17

回答4:

5/17x6/19+5/19x13/17
=1/17x30/19+65/19x1/17
=1/17x(30/19+65/19)
=1/17x95/19
=95/323