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

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

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

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

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~