Mathematics
Junior High
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やり方とか答えとかあっているのか見て欲しいです!(><)全然自信がなくて…
(6) {2a-(3b+7a)}+6b
= 2a-(36+79) + bb
= 29-3b-7a tbb
= -5α+3b
(7) 4x+{3x—(x−y)}
= 4x+3x-(x-3)
=4Xx+3x-つける
= 6x +3
(8) 5x+{(4x-2y)—3y}
5つ+(4x-2y)-3y
=5x+4x-2y-3g
9x-5y
=
(9) 3x-{y-(2x−3y)}
=3x-y-(2x-32)
= 3x-2-2x+3y
=x+2y
(10) -5x-{2x-(3x-y)}
N
-5at3b
16x+y
=-10x+y
921-53
x+2y
-10x1y
-5x-2x-(3x-3)
- 5x-2x-3x+y
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わぁ!ありがとうございます!1からもう一度やってみます(๑•̀ㅂ•́)و✧