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про482
@про482
July 2022
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решить ур-ния а) (5-х):3=15; б)3*(2+х)=15;с)42:(у+4)=6; д)27(n-27)=27;e)5(14+b)=170 ;(5x-32):4=17
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tundru
А)(5-х):3=15 5-х=15*3 -х=45-5 х= -40
б)3*(2+х)=15 2+х=15:3 х=5-2 х=3
с) 42:(у+4)=6 у+4=6*42 у= 252-4 у=248
д)27(n-27)=27 n-27=1 n=1+27 n=28
e)5(14+b)=170 14+b= 170:5 b=34-14 b=20
(5х-32):4=17 5х-32= 17*4 5х=68+32 х=20
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tundru
3*(2+х)=15
tundru
2+х=15:3
tundru
х=5-2
tundru
х=3
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Answers & Comments
б)3*(2+х)=15 2+х=15:3 х=5-2 х=3
с) 42:(у+4)=6 у+4=6*42 у= 252-4 у=248
д)27(n-27)=27 n-27=1 n=1+27 n=28
e)5(14+b)=170 14+b= 170:5 b=34-14 b=20
(5х-32):4=17 5х-32= 17*4 5х=68+32 х=20