解方程.2.5x=14; 2x-0.24=0.12; 8x-4x=0.64; 13(x+5)=169.
问题描述:
解方程.
2.5x=14; 2x-0.24=0.12; 8x-4x=0.64; 13(x+5)=169.
答
(1)2.5x=14 2.5x÷2.5=14÷2.5 x=5.6;(2)2x-0.24=0.122x-0.24+0.24=0.12+0.24 &nbs...