解方程: 2.1÷(x-0.6)=1.4; (x+7)÷11/5=6.4; 42/3x-12×3=14; x-4/9x=4.5÷21/7.

问题描述:

解方程:
2.1÷(x-0.6)=1.4;                     
(x+7)÷1

1
5
=6.4;
4
2
3
x-12×3=14;                       
x-
4
9
x=4.5÷2
1
7

(1)2.1÷(x-0.6)=1.42.1÷(x-0.6)×(x-0.6)=1.4(x-0.6)            1.4(x-0.6)=2.1       1.4(x-0....