y:y= bao nhiêu
Tìm y:
y x 7 = 5,6 %
\(y\times7=5,6\%\)
\(\Leftrightarrow y\times7=\dfrac{5,6}{100}\)
\(\Leftrightarrow y=\dfrac{5,6}{100}:7=\dfrac{1}{125}\)
Tìm Y:
Y x 4 x 25 = 388600
2. Tìm y:
y : 15 = 28 875 : 35
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Tìm y:Y x 4 = 32 x 8
219,1+y:y<yx2+yx4-y<230,2-y+y
219,1 + y:y < y \(\times\) 2 + y \(\times\) 4 - y < 230,2 - y + y
219,1 + 1 < y \(\times\) 2 + y \(\times\) 4 - y \(\times\) 1 < 230,2 - ( y - y)
210,1 < y \(\times\) ( 2 + 4 - 1) < 230,2
210,1 < y \(\times\) 5 < 230,2
210,1 : 5 < y < 230,2: 5
42,02 < y < 46,04
tìm y:y + 23 = 6 x y +17
y + 23 = 6 x y + 17
=> 5 x y = 6
=> y = 6/5
a, Tìm y: y x 20 + 16 x y = 972 |
\(y.\left(20+16\right)=972\Leftrightarrow36y=972\Leftrightarrow y=27\)
y x (20+ 16) = 972
y x 36 = 972
y = 972 : 36
y = 27
Tìm y:
y x 3,2 + y x 6,8 = 125,68-99
\(\Rightarrow y\times\left(3,2+6,8\right)=26,68\\ \Rightarrow y\times10=26,68\\ \Rightarrow y=26,68:10\\ \Rightarrow y=2,668\)
Tìm y biết y-36= y:y +1
\(y-36=y\div y+1\)
\(y-36=1+1\)
\(y-36=2\)
\(y=2+36\)
\(y=38\)
Vậy \(y=38\)
\(y-36=y:y+1\)
\(y-36=1+1\)
\(y-36=2\)
\(y=2+36\)
\(y=38\)