问题
解答题
求未知数X.
|
答案
(1)2X+9×0.3=24.7,
2X+2.7=24.7,
2X+2.7-2.7=24.7-2.7,
2X=22,
2X÷2=22÷2,
X=11;
(2)X:
=24:3,5 8
3X=
×24,5 8
3X=15,
3X÷3=15÷3,
X=5.
求未知数X.
|
(1)2X+9×0.3=24.7,
2X+2.7=24.7,
2X+2.7-2.7=24.7-2.7,
2X=22,
2X÷2=22÷2,
X=11;
(2)X:
=24:3,5 8
3X=
×24,5 8
3X=15,
3X÷3=15÷3,
X=5.