问题
解答题
解方程.
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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;