问题
解答题
解方程.
|
答案
(1)
x=213 7
x×3 7
=21×7 3 7 3
x=49;
(2)
x=5 8 25 36
x×5 8
=8 5
×25 36 8 5
x=
;10 9
(3)
x=7 20 21 50
x×7 20
=20 7
×21 50 20 7
x=
.6 5
解方程.
|
(1)
x=213 7
x×3 7
=21×7 3 7 3
x=49;
(2)
x=5 8 25 36
x×5 8
=8 5
×25 36 8 5
x=
;10 9
(3)
x=7 20 21 50
x×7 20
=20 7
×21 50 20 7
x=
.6 5