问题 解答题
解方程.
9.6x÷2=14.42.2x-1=10260+6x=410x-0.4x=54.
答案

(1)9.6x÷2=14.4,

9.6x÷2×2=14.4×2,

9.6x=28.8,

9.6x÷9.6=28.8÷9.6,

x=3;

(2)2.2x-1=10,

2.2x-1+1=10+1,

2.2x=11,

2.2x÷2.2=11÷2.2,

x=5;

(3)260+6x=410,

260+6x-260=410-260,

6x=150,

6x÷6=150÷6,

x=25;

(4)x-0.4x=54,

(1-0.4)x=54,

0.6x=54,

0.6x÷0.6=54÷0.6,

x=90;

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