问题
解答题
解方程
|
答案
(1)
x=1 9 2 3
x×9=1 9
×92 3
x=6;
(2)x÷
=287 4
x÷
×7 4
=28×7 4 7 4
x=49;
(3)x-
=2 7 1 14
x-
+2 7
=2 7
+1 14 2 7
x=
.5 14
解方程
|
(1)
x=1 9 2 3
x×9=1 9
×92 3
x=6;
(2)x÷
=287 4
x÷
×7 4
=28×7 4 7 4
x=49;
(3)x-
=2 7 1 14
x-
+2 7
=2 7
+1 14 2 7
x=
.5 14