Mathematics
Senior High
誰か助けてください(泣)
2、3番が分かりません
1 ⑪) 78十2715 =/(5十3)十275・3
=ソ5 73.
(2) 77-473 =/7ー2712 =/(4+3)一274・3
=ニy4 73 =2-73
l
2 2
7 3 714+76
72 2
馬 な7打 10寺2721 7(7+8)+277・3
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マジで助かりました!