问题
解答题
解方程.
|
答案
(1)x-
=3 10
,1 5
x-
+3 10
=3 10
+1 5
,3 10
x=
;1 2
(2)0.5x+7.5x=16,
(0.5+7.5)x=16,
8x=16,
8x÷8=16÷8,
x=2.
解方程.
|
(1)x-
=3 10
,1 5
x-
+3 10
=3 10
+1 5
,3 10
x=
;1 2
(2)0.5x+7.5x=16,
(0.5+7.5)x=16,
8x=16,
8x÷8=16÷8,
x=2.