问题 解答题
求X的值:
X÷3=4

410+X=740

0.8X=0.56

X-
5
6
=
1
12
答案

(1)X÷3=4,

X÷3×3=4×3,

X=12;

(2)410+X=740,

410+X-410=740-410,

X=330;

(3)0.8X=0.56,

0.8X÷0.8=0.56÷0.8,

X=0.7;

(4)X-

5
6
=
1
12

X-

5
6
+
5
6
=
1
12
+
5
6

X=

11
12

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