Mathematics
Junior High
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計算が綺麗に終わらないんですが誰か間違っているところ分かりますか?
Y=-1
(2)
#
(4)
7x-3y=-15
y=-2x-8
7x-3(-2x-8)=-15
7x+6x+24
= -15
13x = 9
x =
of
= 9
13
Y = - 2 × 2²² - 8
Y =
13.
3 (x + 2) - 4y= 5x-3y=26
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なるほど!!符号間違ってました。ありがとうございます!!