问题
解答题
解方程: χ÷
|
答案
(1)χ÷
=11 21
,7 33
χ÷
×11 21
=11 21
×7 33
,11 21
x=
;1 9
(2)χ+
χ=13,3 10
x=13,13 10
x÷13 10
=13÷13 10
,13 10
x=10;
(3)5χ-
=5 6
,1 6
5χ-
+5 6
=5 6
+1 6
,5 6
5x÷5=1÷5,
x=0.2.