巧解方程.
3x+2.7=5.94 1.3x-0.44=0.6 6.7x+x=23.1
x-0.1x=1.08 4.5x÷3=0.9 (7-1.4)x+5=7.8.
巧解方程.3x+2.7=5.94
答案:2 悬赏:50 手机版
解决时间 2021-04-23 13:55
- 提问者网友:我没有何以琛的痴心不悔
- 2021-04-23 07:21
最佳答案
- 五星知识达人网友:纵马山川剑自提
- 2021-04-23 07:37
(1)3x+2.7=5.94,
3x+2.7-2.7=5.94-2.7,
3x=3.24,
3x÷3=3.24÷3,
x=1.08;
(2)x-0.1x=1.08,
(1-0.1)x=1.08,
0.9x÷0.9=1.08÷0.9,
x=1.2;
(3)1.3x-0.44=0.6,
1.3x-0.44+0.44=0.6+0.44,
1.3x=1.04,
1.3x÷1.3=1.04÷1.3,
x=0.8;
(4)4.5x÷3=0.9,
4.5x÷3×3=0.9×3,
4.5x=2.7,
4.5x÷4.5=2.7÷4.5,
x=0.6;
(5)6.7x+x=23.1,
( 6.7+1)x=23.1,
7.7x÷7.7=23.1÷7.7,
x=3;
(6)(7-1.4)x+5=7.8,
5.6x+5=7.8,
5.6x+5-5=7.8-5,
5.6x=2.8,
5.6x÷5.6=2.8÷5.6,
x=0.5.
3x+2.7-2.7=5.94-2.7,
3x=3.24,
3x÷3=3.24÷3,
x=1.08;
(2)x-0.1x=1.08,
(1-0.1)x=1.08,
0.9x÷0.9=1.08÷0.9,
x=1.2;
(3)1.3x-0.44=0.6,
1.3x-0.44+0.44=0.6+0.44,
1.3x=1.04,
1.3x÷1.3=1.04÷1.3,
x=0.8;
(4)4.5x÷3=0.9,
4.5x÷3×3=0.9×3,
4.5x=2.7,
4.5x÷4.5=2.7÷4.5,
x=0.6;
(5)6.7x+x=23.1,
( 6.7+1)x=23.1,
7.7x÷7.7=23.1÷7.7,
x=3;
(6)(7-1.4)x+5=7.8,
5.6x+5=7.8,
5.6x+5-5=7.8-5,
5.6x=2.8,
5.6x÷5.6=2.8÷5.6,
x=0.5.
全部回答
- 1楼网友:十鸦
- 2021-04-23 07:46
3x+2.7-0.9=7.89
3x=7.89+0.9-2.7
3x=6.09
x=2.03
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