问题
解答题
解方程:
|
答案
(1)
=5 7
,x 35
7x=5×35,
7x÷7=5×35÷7,
x=25;
(2)2x+3×0.9=24.7,
2x+2.7=24.7,
2x+2.7-2.7=24.7-2.7,
2x=22,
2x÷2=22÷2,
x=11;
(3)24x-17.6x=23.04,
6.4x=23.04,
6.4x÷6.4=23.04÷6.4,
x=3.6.
解方程:
|
(1)
=5 7
,x 35
7x=5×35,
7x÷7=5×35÷7,
x=25;
(2)2x+3×0.9=24.7,
2x+2.7=24.7,
2x+2.7-2.7=24.7-2.7,
2x=22,
2x÷2=22÷2,
x=11;
(3)24x-17.6x=23.04,
6.4x=23.04,
6.4x÷6.4=23.04÷6.4,
x=3.6.