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kofanovayana
@kofanovayana
June 2022
2
13
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помогите решить уровнение
lx+2l-l5-xl=2x+7
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aniasdfghjkl
X+2-5-x=2x+7-2x=-2+5+7-2x=10x=10:(-2)x=-5Ответ:-5(модуль открывается всегда положительным) :))
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2407Alexa
X+2-5-x=2x+7x-x-2x=7-2+5-2x=10|:(-2)x=-5-x-2-(-5+x)=2x+7-x-2+5-x=2x+7-2x-2x=7+2-5-4x=4|:(-4)x=-1
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