问题
解答题
解方程.
9.4x-0.4x=16.2
0.2x-0.4+0.5=3.7.
答案
(1)9.4x-0.4x=16.2,
9x=16.2,
9x÷9=16.2÷9,
x=1.8;
(2)0.2x-0.4+0.5=3.7,
0.2x+0.1-0.1=3.7-0.1,
0.2x÷0.2=3.6÷0.2,
x=18.
解方程.
9.4x-0.4x=16.2
0.2x-0.4+0.5=3.7.
(1)9.4x-0.4x=16.2,
9x=16.2,
9x÷9=16.2÷9,
x=1.8;
(2)0.2x-0.4+0.5=3.7,
0.2x+0.1-0.1=3.7-0.1,
0.2x÷0.2=3.6÷0.2,
x=18.