こんばんは！
問1の(7)～(12)までの回答です！
(7) 7:5＝10: x→７分の50
(8) 12:10＝15:x→2分の25
(9) 6:x＝4:6→9
(10) 12:x＝8:10→15
(11) 7:4＝x:3→4分の21
(12) 6:8＝x:(12－x)→36 です！分かりづらくてごめんなさい🙏🏻
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