195/9+39/10−5.22195/9−627/50+5.22÷(1993×0.41995×0.5+1.61995).
问题描述:
÷(19
+35 9
−5.229 10 19
−65 9
+5.2227 50
+1993×0.4 1995×0.5
). 1.6 1995
答
÷(19
+35 9
−5.229 10 19
−65 9
+5.2227 50
+1993×0.4 1995×0.5
),1.6 1995
=
÷19
−1.325 9 19
−1.325 9
,1993×0.4+0.8 1995×0.5
=1÷
,0.4×(1993+2) 1995×0.5
=1÷
,4 5
=
.5 4