45÷(58-12)÷584.72-1.16-2.842-613×269-23375+450÷18×253(x-2.1)=8.4x-34x=35.-数学

题目简介

45÷(58-12)÷584.72-1.16-2.842-613×269-23375+450÷18×253(x-2.1)=8.4x-34x=35.-数学

题目详情

4
5
÷(
5
8
-
1
2
)÷
5
8

4.72-1.16-2.84
2-
6
13
×
26
9
-
2
3

375+450÷18×25
3(x-2.1)=8.4
x-
3
4
x=
3
5
题型:解答题难度:中档来源:不详

答案

class="stub"4
5
÷(class="stub"5
8
-class="stub"1
2
)÷class="stub"5
8

=class="stub"4
5
÷class="stub"1
8
÷class="stub"5
8

=class="stub"4
5
×8×class="stub"8
5

=class="stub"256
25


4.72-1.16-2.84,
=4.72-(1.16+2.84),
=4.72-4,
=0.72;

2-class="stub"6
13
×class="stub"26
9
-class="stub"2
3

=2-(class="stub"4
3
+class="stub"2
3
),
=2-2,
=0;

375+450÷18×25
=375+25×25
=375+625
=1000;

3(x-2.1)=8.4,
x-2.1=2.8,
x=2.8+2.1,
x=4.9;

x-class="stub"3
4
x=class="stub"3
5

class="stub"1
4
x=class="stub"3
5

x=class="stub"3
5
÷class="stub"1
4

x=class="stub"12
5

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