解方程.12x-14=25x+78x=3423x÷14=12.-六年级数学

题目简介

解方程.12x-14=25x+78x=3423x÷14=12.-六年级数学

题目详情

解方程.
1
2
x-
1
4
=
2
5

x+
7
8
x=
3
4

2
3
1
4
=12.
题型:解答题难度:中档来源:不详

答案

class="stub"1
2
x-class="stub"1
4
=class="stub"2
5

class="stub"1
2
x+class="stub"1
4
-class="stub"1
4
=class="stub"2
5
+class="stub"1
4

class="stub"1
2
x=0.65
class="stub"1
2
x×2=0.65×2
x=1.3

②x+class="stub"7
8
x=class="stub"3
4

class="stub"15
8
x=class="stub"3
4

class="stub"15
8
×class="stub"8
15
x=class="stub"3
4
×class="stub"8
15

x=class="stub"2
5



class="stub"2
3
class="stub"1
4
=12
class="stub"2
3
x×4=12
class="stub"8
3
x=12
class="stub"8
3
class="stub"3
8
=12×class="stub"3
8

x=4.5

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