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52 \(\times\) ( y : 78) = 3380
y : 78 = 3380: 52
y : 78 = 65
y = 65 \(\times\) 78
y = 5070
y: 55 - y + 33 = 76
\(y\) \(\times\) ( \(\dfrac{1}{55}\) - 1) = 76 - 33
y \(\times\) ( \(\dfrac{-54}{55}\) ) = 43
y = 43 : (- \(\dfrac{54}{55}\))
y = - \(\dfrac{2365}{54}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
55 – y + 33 = 76
55 - y = 76 – 33
55 - y = 43
y = 55 – 43
y = 12
![](https://rs.olm.vn/images/avt/0.png?1311)
55-y+33=76
55-y=76-33
55-y=43
y=56-43
y=13
55 - y + 33 = 76
(55 + 33) - y = 76
88 - y = 76
y = 88 - 76
y = 12
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
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\(55-y+33=76\)
\(55-y=76-33\)
\(55-y=43\)
\(y=55-43\)
\(y=12\)
55 . y + 46 . y - y = 3600
y(55+46-1)=3600
y.100=3600
y=36