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\(\text{y:0,125+y:0,5+y=9,9}\)
\(y:\left(0,125+0,5+1\right)=9,9\)
\(y:\frac{13}{8}=\frac{99}{10}\)
\(y=\frac{99}{10}.\frac{13}{8}\)
\(y=\frac{1287}{80}\)
học tốt
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y : 0,25 + y : 0,5 + y : 0,01 + y = 214
y : \(\frac{1}{4}\)+ y :\(\frac{1}{2}\)+ y : \(\frac{1}{100}\)+ y = 214
y x 4 + y x 2 + y x 100 + y x 1 = 214
y x ( 4 + 2 + 100 + 1 ) = 214
y x 107 = 214
y = 214 : 107
y = 2.
Vậy y = 2.
~Chúc bạn hok tốt~
#Sa-ngu-ngốc
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y + y : 0,5 + y : 0,25 + y : 0,125 = y + 2y + 4y + 8y = 15y = 15 => y = 15 : 15 = 1
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\(y\div0,125+y\div0,5+y=9,9\)
\(\Leftrightarrow y\times8+y\times2+y=9,9\)
\(\Leftrightarrow y\times\left(8+2+1\right)=9,9\)
\(\Leftrightarrow11y=9,9\)
\(\Leftrightarrow y=0,9\)
Trả lời:
y : 0,125 + y : 0,5 + y = 9,9
y : 0,125 + y : 0,5 + y : 1 = 9,9
y : ( 0,125 + 0,5 + 1 ) = 9,9
y : 1,625 = 9,9
y = 9,9 x 1,625
y = 16,0875. Vậy y = 16,0875
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\(Y:\dfrac{7}{5}=\dfrac{5}{6}+\dfrac{5}{12}=\dfrac{15}{12}\\ Y=\dfrac{15}{12}\times\dfrac{7}{5}=\dfrac{7}{4}\)
\(y:\dfrac{7}{5}=\dfrac{5}{6}+\dfrac{5}{12}\\ \Leftrightarrow y:\dfrac{7}{5}=\dfrac{5\times2}{6\times2}+\dfrac{5}{12}\\ \Leftrightarrow y:\dfrac{7}{5}=\dfrac{10}{12}+\dfrac{5}{12}\\ \Leftrightarrow y:\dfrac{7}{5}=\dfrac{15}{12}\\ \Leftrightarrow y:\dfrac{7}{5}=\dfrac{5}{4}\\ \Leftrightarrow y=\dfrac{5}{4}\times\dfrac{7}{5}\\ \Leftrightarrow y=\dfrac{7}{4}\)
\(\Rightarrow C\)
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11,5 x y + 7,5 x y + y = 30
( 11,5 + 7,5 + 1 ) x y = 30
20 x y = 30
y = 30 : 20
y = 1,5
bạn ơi sao mình nhập 1.5 vào mà nó cứ nhân sai ko ra 30
135 + y x 9,5 + y : 0,125 = 310
y x 9,5 + y x 8 = 310 - 135
y x (9,5 + 8) = 175
y x 17,5 = 175
y = 175 : 17,5
y = 10