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Kruchenko
@Kruchenko
September 2021
1
8
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При каких значениях переменной каждое из выражений принимает значение ,равное 10? сделайте проверку
а) х-12
б) 1/3а+6
в) -2с-6
г) 20/а
д) |х| -2
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Mydrый
а) х-12 =10 х=22 22-12=10
б) (1/3а)+6=10 а/3=10-6
а/3=4 а=12 12/3+6=4+6=10
в) -2с-6=10 -2с=16 с=-8 -2*(-8)-6=16-6=10
г) 20/а=10 10а=20 а=2 20/2=10
д) |х| -2 =10 |x|=12 x₁=12 x₂=-12
|12|-2=12-2=10 |-12|-2=12-2=10
3 votes
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Answers & Comments
б) (1/3а)+6=10 а/3=10-6
а/3=4 а=12 12/3+6=4+6=10
в) -2с-6=10 -2с=16 с=-8 -2*(-8)-6=16-6=10
г) 20/а=10 10а=20 а=2 20/2=10
д) |х| -2 =10 |x|=12 x₁=12 x₂=-12
|12|-2=12-2=10 |-12|-2=12-2=10