(1/12+3/47)×12-36÷47.

问题描述:

1
12
+
3
47
)×12-36÷47.

1
12
+
3
47
)×12-36÷47,
=
1
12
×12+
3
47
×12-
36
47

=1+(
36
47
-
36
47
),
=1+0,
=1.