解,原式=24.5-(7.5+0.08+3)
=(24.5-7.5)-3.08
=17-3.08
=13.92
24.5-(7.58+9/5×5/3)
=24.5-(7.58+3)
=24.5-10.58
=13.92
=24.5-(7.58+3)
=24.5-10.58
=13.92
=24.5-(7.5+0.08+3)
=(24.5-7.5)-3.08
=17-3.08
=13.92
24.5-(7.58+9/5×5/3)
=24.5-(7.58+3)
=27.5-10.58
=16.92