4-0.7x=3.794-0.7x=3.79 1/6+2/7x=42

问题描述:

4-0.7x=3.79
4-0.7x=3.79 1/6+2/7x=42

你好!
4-0.7x=3.79
0.7x=4-3.79
0.7x=0.21
x=0.3
祝你学习进步,望采纳,谢谢!!!!!!!!!O(∩_∩)O~

移项
0.7x=4-3.79
0.7x=0.21
x=0.21÷0.7
x=0.3

4-0.7x=3.79
移项得:
4-3.79=0.7x
0.7x=0.21
x=0.21÷0.7
x=0.3