问题
解答题
求未知数x.
8+4x=48
0.6:2.5=6:x.
答案
(1)8+4x=48,
8+4x-8=48-8,
4x÷4=40÷4,
x=10;
(2)0.6:2.5=6:x,
0.6x=2.5×6,
0.6x÷0.6=15÷0.6,
x=25.
求未知数x.
8+4x=48
0.6:2.5=6:x.
(1)8+4x=48,
8+4x-8=48-8,
4x÷4=40÷4,
x=10;
(2)0.6:2.5=6:x,
0.6x=2.5×6,
0.6x÷0.6=15÷0.6,
x=25.