(45,8-y)x2,8=46,06
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45,8 - x = 46,06 / 2,8
45,8 - x = 16,45
x = 45,8 - 16,45
x = 29,35
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a.45,8 +y x2,5 =55,05
y x 2,5=9,25
y=3,7
b.45,8 + y x2,5 = 55,05 :2
45,8 + y x 2,5 =27,525
y x 2,5=-18,275
y=-7,31
c.24,3 + y :1,6 -3,4 =30,24
y:1,6 +20,9=30,24
y:1,6=9,34
y=14,944
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y x 55 - y x 44 -y = 45.8
y x ( 55 - 44 - 1 ) = 45.8
y x 10 = 45.8
y = 45.8 : 10
y = 4.58
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\(\left(45,8-y-8,2\right)\times23\%=12,4\times0,23\)
\(\left(37,6-y\right)\times0,23=12,4\times0,23\)
\(37,6-y=12,4\)
\(y=25,2\)
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45,8 + y x 2,5 = 55,05 x 2
y x 2,5 + 45,8 = 55,05 x 2
y x 2,5 + 45,8 = 110,1
y x 25 = 110,1 - 45,8
y x 25 = 64,3
y = 64,3 : 2,5
y = 25,72
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y x 55 - y x 44 - y = 45,8
y x 55 - y x 44 - y x 1 = 45,8
y x ( 55- 44- 1) = 45,8
y x 10 = 45 , 8
y = 45,8 : 10
y = 4,58
y x 55 - y x 44 - y = 45,8 y x ( 55 - 44 - 1 ) =45,8 y x 10 =45,8 y =45,8:10 y =4,58
`(45,8-y)xx2,8=46,06`
`=>45,8-y=46,06:2,8`
`=>45,8-y=16,45`
`=>y=45,8-16,45`
`=>y=29,35`
`(45,8-y)xx2,8=46,06`
`=> 45,8-y=46,06:2,8`
`=> 45,8-y=16,45`
`=> y= 45,8 -16,45`
`=>y=29,35`