Toán Lớp 6: 41 – 25x – 26x – 27x + 30 = 46
giúp mik vs ạ :(( (giải chi tiết ak)
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Toán Lớp 6: 41 – 25x – 26x – 27x + 30 = 46
giúp mik vs ạ :(( (giải chi tiết ak)
Comments ( 2 )
41 – 25x – 26x – 27x + 30 = 46
41 – (25x + 26x + 27x) = 46 – 30
41 – 78x = 16
78x = 41 – 16
78x = 25
x = 25 : 78
x = 25/78
Vậy x = 25/78
#andy
\[\begin{array}{l}
41{\rm{ }} – {\rm{ }}25x{\rm{ }} – {\rm{ }}26x{\rm{ }} – {\rm{ }}27x{\rm{ }} + {\rm{ }}30{\rm{ }} = {\rm{ }}46\\
41 – 25x – 26x – 27x + 30 – 46 = 0\\
\left( {41 + 30} \right) + \left( { – 25x – 26x – 27x} \right) = 46\\
71 + \left( { – 78x} \right) = 46\\
71 – 78x = 46\\
78x = 71 – 46\\
78x = 25\\
x = 25:78\\
x = \dfrac{{25}}{{78}}
\end{array}\]