14×34+14+65÷478?(35?18)?2537-25+47-35(225+57)×7+6251+2+3-4+5+6+7-8+9+…+95-96+97+98+99-100

2025-01-19 03:05:46
推荐回答(1个)
回答1:

(1)

1
4
×34+
1
4
+65÷4,
=
1
4
×34+
1
4
×1+65×
1
4

=
1
4
×(34+1+65),
=
1
4
×100,
=25;

(2)
7
8
?(
3
5
?
1
8
)?
2
5

=
7
8
-
3
5
+
1
8
-
2
5

=(
7
8
+
1
8
)-(
3
5
+
2
5
),
=1-1,
=0;

(3)
3
7
-
2
5
+
4
7
-
3
5

=(
3
7
+
4
7
)-(
2
5
+
3
5
),
=1-1,
=0;

(4)(
2
25
+
5
7
)×7+
6
25

=
2
25
×7+
5
7
×7+