(1/12+3/47)×12-36÷47.
问题描述:
(
+1 12
)×12-36÷47.3 47
答
(
+1 12
)×12-36÷47,3 47
=
×12+1 12
×12-3 47
,36 47
=1+(
-36 47
),36 47
=1+0,
=1.