|
(1)
X-8 9
X=1 3
,35 36
X=5 9
,35 36
X÷5 9
=5 9
÷35 36
,5 9
x=
;7 4
(2)
=30 22.5
,X 94.5
22.5x=94.5×30,
22.5x=2835,
22.5x÷22.5=2835÷22.5,
x=126.
|
(1)
X-8 9
X=1 3
,35 36
X=5 9
,35 36
X÷5 9
=5 9
÷35 36
,5 9
x=
;7 4
(2)
=30 22.5
,X 94.5
22.5x=94.5×30,
22.5x=2835,
22.5x÷22.5=2835÷22.5,
x=126.