问题
解答题
|
答案
(1)χ-860=260,
χ-860+860=260+860,
χ=1120;
(2)x-
=3 4
,5 2
x-
+3 4
=3 4
+5 2
,3 4
x=
;13 4
(3)15χ=6,
15χ÷15=6÷15,
χ=0.4;
(4)6.8+χ=70,
6.8+χ-6.8=70-6.8,
χ=63.2.
|
(1)χ-860=260,
χ-860+860=260+860,
χ=1120;
(2)x-
=3 4
,5 2
x-
+3 4
=3 4
+5 2
,3 4
x=
;13 4
(3)15χ=6,
15χ÷15=6÷15,
χ=0.4;
(4)6.8+χ=70,
6.8+χ-6.8=70-6.8,
χ=63.2.