697/15x+346/x=17
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15x+364= 41x
41x - 15x = 364
26x = 364
X= 364 : 26
X = 14
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( 15x + 364 ) : x = 697 : 17
<=> ( 15x + 364 ) : x = 41
<=> 15x + 364 = 41x
<=> 364 = 26x
<=> x = 364 : 26
<=> x = 14
Vậy x = 14
~ Hok tốt ~
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\(697:\frac{15x+364}{x}=17\)
\(\left(=\right)\frac{15x+364}{x}=41\)
\(\left(=\right)15x+364=41.x\)
\(\left(=\right)41x-15x=364\)
\(\left(=\right)26x=364\)
\(\left(=\right)x=14\)
\(697:\frac{15x+364}{x}=17\)
\(\Rightarrow\frac{15x+364}{x}=697:17\)
\(\Rightarrow\frac{15x+364}{x}=41\)
\(\Rightarrow15x+364=41x\)
\(\Rightarrow41x-15x=364\)
\(\Rightarrow26x=364\)
\(\Rightarrow x=364:26\)
\(\Rightarrow x=14\)
Vậy x = 14
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\(697:\left(15x+364\right):x=17\)
\(\Leftrightarrow697:\left(15x+364\right)=17x\)
\(\Leftrightarrow697=17x\left(15x+364\right)\)
\(\Leftrightarrow255x^2+6188x-697=0\)
\(\Leftrightarrow nghiem-xau-minh-khong-lam-nhe!\)
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[(x + 32) - 17] . 2 = 42
(x + 32) - 17 = 42 : 2
(x + 32) - 17 = 21
x + 32 = 21 + 17
x + 32 = 38
x = 38 - 32
x = 6
Vậy x = 6
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a, \(\left(2x-4\right)\left(3x+12\right)=0\)
\(\Rightarrow\orbr{\begin{cases}2x-4=0\\3x+12=0\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}2x=4\\3x=-12\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=2\\x=-4\end{cases}}\)
b, \(697\div\frac{15x+364}{x}=17\)
\(\Rightarrow\frac{15x+364}{x}=697\div17\)
\(\Rightarrow\left(15x+364\right)\div x=41\)
\(\Rightarrow15x+364=41x\)
\(\Rightarrow15x-41x=-364\)
\(\Rightarrow-26x=-364\)
\(\Rightarrow x=-364\div\left(-26\right)\)
\(\Rightarrow x=14\)