Mathematics
Junior High
(１) と ( 2 ) が わ か り ま せ ん
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D.C
6 次の比例式で,xの値を求めなさい。
(1) x:4=2:3
(2) (x-2):6=1:2
(
(
(4) 9:(2x+1)=3:5
(5) 4:(9-x)=2:5
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