问题
解答题
解方程(或比例).
14x-0.75=1
12÷1.25=0.4x.
答案
(1)14x-0.75=1,
14x-0.75+0.75=1+0.75,
14x=1.75,
14x÷14=1.75÷14,
x=0.125;
(2)12÷1.25=0.4x,
0.4x=12÷1.25,
0.4x÷0.4=9.6÷0.4,
x=24.
解方程(或比例).
14x-0.75=1
12÷1.25=0.4x.
(1)14x-0.75=1,
14x-0.75+0.75=1+0.75,
14x=1.75,
14x÷14=1.75÷14,
x=0.125;
(2)12÷1.25=0.4x,
0.4x=12÷1.25,
0.4x÷0.4=9.6÷0.4,
x=24.