问题 解答题
解方程.
x-1.75=3.4

9x=2.7

x+2.08=4.25.
答案

(1)x-1.75=3.4,

x-1.75+1.75=3.4+1.75,

x=5.15;

(2)9x=2.7,

9x÷9=2.7÷9,

x=0.3;

(3)x+2.08=4.25,

x+2.08-2.08=4.25-2.08,

x=2.17.

判断题
判断题