直接写得数。63-9= 75+24= 84-16=70-35= 34+16= 48+25=
(1–×)÷ [(1–)×]÷4
[(1–)×]÷4++
(–)÷(+)[1–(+)]÷3.5
25÷(–)+–
×
)÷
[(1–
)×
)×
]÷4
+
+
–
)÷(
+
)[1–(
+
)]÷3.5
–
)
+
–
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