解方程x+27=914720-x=151115-x=13x-(27+38)=528.-数学

题目简介

解方程x+27=914720-x=151115-x=13x-(27+38)=528.-数学

题目详情

解方程
x+
2
7
=
9
14
7
20
-x=
1
5
11
15
-x=
1
3
x-(
2
7
+
3
8
)=
5
28
题型:解答题难度:中档来源:不详

答案

①x+class="stub"2
7
=class="stub"9
14

x+class="stub"2
7
-class="stub"2
7
=class="stub"9
14
-class="stub"2
7

x=class="stub"5
14


class="stub"7
20
-x=class="stub"1
5

class="stub"7
20
-x+x=class="stub"1
5
+x
class="stub"7
20
-class="stub"1
5
=class="stub"1
5
-class="stub"1
5
+x
x=class="stub"3
20



class="stub"11
15
-x=class="stub"1
3

class="stub"11
15
-x+x=class="stub"1
3
+x
class="stub"11
15
=class="stub"1
3
+
x
x=class="stub"2
5


④x-(class="stub"2
7
+class="stub"3
8
)=class="stub"5
28

x-class="stub"37
56
=class="stub"10
56

x-class="stub"37
56
+class="stub"37
56
=class="stub"10
56
+class="stub"37
56

x=class="stub"47
56

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