|
(1)(2
-15 8
)÷[(34 7
+4.375)÷191 12
]8 9
=
÷[(359 56
+41 12
)÷193 8
],8 9
=
÷[59 56
÷179 24
],179 9
=
÷59 56
,3 8
=
.59 21
(2)1
×(41 3
-2.625)-41 12
,1 2
=
×(44 3
-21 12
)-45 8 1 2
=
×4 3
-435 24 1 2
=1
-417 18
,1 2
=-2
.5 9
(3)2-
÷6 13
-9 26
+2 3
÷0.6×18 35 2 3
=2-
-4 3
+2 3
×18 35
×5 3
,2 3
=0+
,4 7
=
;4 7
(4)[2
+(5.4-21 3
)×12 3
]÷62 3 8 9
=[2
+(51 3
-22 5
)×12 3
]÷62 3
,8 9
=[2
+1 3
×41 15
]÷5 3
,62 9
=[2
+1 3
]×41 9
,9 62
=
×62 9
,9 62
=1.