问题
解答题
解方程.
|
答案
(1)5x-2.4×5=8,
5x-12+12=8+12,
5x=20,
5x÷5=20÷5,
x=4,
(2)
+x 5
x=3 4
×2,3 8
x=19 20
,3 4
x×19 20
=20 19
×3 4
,20 19
x=
.15 19
解方程.
|
(1)5x-2.4×5=8,
5x-12+12=8+12,
5x=20,
5x÷5=20÷5,
x=4,
(2)
+x 5
x=3 4
×2,3 8
x=19 20
,3 4
x×19 20
=20 19
×3 4
,20 19
x=
.15 19