试题与答案

49:16=X:15; 4.8X+115X=18; X÷13+7=103.

题型:解答题

题目:

4
9
1
6
=X:15;
4.8X+1
1
5
X=18;
1
3
+7=103.

答案:

(1)

4
9
1
6
=x:15,

1
6
x=
4
9
×15,

1
6
x×6=
20
3
×6,

x=40;

(2)4.8x+1

1
5
x=18,

6x=18,

6x÷6=18÷6,

x=3;

(3)x÷

1
3
+7=103,

x÷

1
3
+7-7=103-7,

x÷

1
3
×
1
3
=96×
1
3

x=32.

试题推荐
微信公众账号搜索答案