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
=6.4;1 5
4
x-12×3=14; 2 3
x-
x=4.5÷24 9
. 1 7
答
(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....