问题
解答题
求下列各式中未知数x的值.
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答案
(1)
=2.4 0.3
,x 0.5
0.3x=2.4×0.5,
0.3x÷0.3=1.2÷0.3,
x=4;
(2)36:x=
:0.5,3 2
x=36×0.5,3 2
x÷3 2
=18÷3 2
,3 2
x=12;
(3)0.75x+
x=3.3,5 8
x=3.3,11 8
x÷11 8
=3.3÷11 8
,11 8
x=2.4.