第1个回答 2015-11-20
1、解:4x=41 - 27
4x=14
x=14÷4
x=7/2
2、解:(7 - 3.4)x=0.72
3.6x=0.72
x=0.72÷3.6
x=0.2
3、解:(2 + 1.5)x=42
3.5x=42
x=42÷3.5
x=12
4、解:x - 4.5=318÷6
x=53 + 4.5
x=57.5
5、解:-17x=13.4 - 27
-17x=-13.6
x=-13.6÷(-17)
x=0.8
6、解:x + 1.7=1.4×3
x=4.2 - 1.7
x=2.5