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Мальвина1234
@Мальвина1234
July 2022
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найдите корень уравнения 0.3(8-3Y)=3/2-0/8(y-7) 5/6(1/3х-1/5)=3х+3/1
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CURTER
0,3*(8-3у)=3,2-0,8(у-7)
2,4-0,9у=3,2-0,8у+5,6
2,4-3,2-5,6=0,9у-0,8у
2,4-8,8=0,1у
-6,4=0,1у
у=-6,4:0,1
у=-64
ОТВЕТ НА ВТОРОЕ УРАВНЕНИЕ
znanija.com/task/19176574
2 votes
Thanks 2
tatsach
эта ссылка совсем не то уравнение
tatsach
0.3(8-3Y)=3.2-0.8(y-7)
2.4-0.9у=3.2-0.8у+5.6
0.8у-0.9у=3.2+5.6-2.4
-0.1у=6.4
у=6.4:(-0.1)
у=-64
5/6(1/3х-1/5)=3х+3 1/3
5/18x-1/6=3x+3 1/3
5/18x-3x=3 1/3+1/6
-2 13/18x=10/3+1/6
-2 13/18x=20/6+1/6=21/6
x=31/78:(-2 13/18)=31/78*6/21
x=31/273
3 votes
Thanks 3
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Answers & Comments
2,4-0,9у=3,2-0,8у+5,6
2,4-3,2-5,6=0,9у-0,8у
2,4-8,8=0,1у
-6,4=0,1у
у=-6,4:0,1
у=-64
ОТВЕТ НА ВТОРОЕ УРАВНЕНИЕ znanija.com/task/19176574
2.4-0.9у=3.2-0.8у+5.6
0.8у-0.9у=3.2+5.6-2.4
-0.1у=6.4
у=6.4:(-0.1)
у=-64
5/6(1/3х-1/5)=3х+3 1/3
5/18x-1/6=3x+3 1/3
5/18x-3x=3 1/3+1/6
-2 13/18x=10/3+1/6
-2 13/18x=20/6+1/6=21/6
x=31/78:(-2 13/18)=31/78*6/21
x=31/273