(1)(13+58)÷1112+34=______;(2)若13x=28×30%+25x,则x=______.-数学

题目简介

(1)(13+58)÷1112+34=______;(2)若13x=28×30%+25x,则x=______.-数学

题目详情

(1)(
1
3
+
5
8
)÷
11
12
+
3
4
=______;
(2)若
1
3
x=28×30%+
2
5
x,则x=______.
题型:填空题难度:中档来源:不详

答案

(1)(class="stub"1
3
+class="stub"5
8
)÷class="stub"11
12
+class="stub"3
4

=class="stub"23
24
×class="stub"12
11
+class="stub"3
4

=class="stub"23
22
+class="stub"3
4

=class="stub"79
44


(2)class="stub"1
3
x=28×30%+class="stub"2
5
x,
class="stub"1
3
x=8.4+class="stub"2
5
x,
class="stub"1
3
x-class="stub"2
5
x=8.4,
-class="stub"1
15
x=8.4,
x=-126.
故答案为:class="stub"79
44
,-126.

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