1) Tìm x:
(1,16-x).5,25/(10va5/9 - 7va1/4).2 va 2/17= 75%
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tìm x biết :
(1,16-x).5,25/(10va5/9 - 7va 1/4).2 va 2/17= 75%
( 1,16 - x ) . 5,25 /
10 5/9 - 7 1/4 ) . 2 2/17 = 75 %
Tìm x
\(\frac{\left(1,16-x\right).5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right).2\frac{2}{17}}=75\%\)
Tìm x :
\(\frac{(1,16-x).5,25}{(10\frac{5}{9}-7\frac{1}{4}).2\frac{2}{17}}\)= 75 phần trăm .
\(\frac{\left(1,16-x\right).5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right).2\frac{2}{17}}=75\%\) <=> \(\frac{6,09-5,25x}{\left(\frac{95}{9}-\frac{29}{4}\right).\frac{36}{17}}=\frac{3}{4}\)<=> \(\frac{6,09-5,25x}{\frac{119}{36}.\frac{36}{17}}=\frac{3}{4}\)
<=> \(\frac{6,09-5,25x}{7}=\frac{3}{4}\)<=> 4(6,09-5,25x)=21 <=> 24,36-21x=21
=> 21x=3,36 => x=3,36:21 => x=0,16
Đáp số: x=0,16
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Tìm x biết:
\(\frac{\left(1,16-x\right).5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right).2\frac{2}{17}}=75\%\)
tìm x biết
a)x+30%x = -1,3
b) \(\frac{\left(1,16-x\right).5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right).2\frac{2}{17}}=75\%\)
x + 30% x = - 1,3
x ( 100% + 30% ) = - 1,3
x . 130% = - 1,3
x = - 1,3 : 130%
x = - 1,69
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Tìm X
(1,16-x).5,25
(10 và 5/9 - 7 và 1/4).2 và 2/17
\(\frac{\left(1,16-x0\times\right)5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right)\times2\frac{2}{17}}=75\%\)
a, 7,5 : ( 9 _\(6\dfrac{13}{21}\) ) = \(2\dfrac{13}{25}\)
b, \(\dfrac{\left(1,16-x\right).5,25}{\left(10\dfrac{5}{9}-7\dfrac{1}{4}\right).2\dfrac{2}{17}}\) = 75%
a: Đề sai rồi bạn
b: \(\dfrac{\left(1.16-x\right)\cdot5.25}{\left(10+\dfrac{5}{9}-7-\dfrac{1}{4}\right)\cdot\dfrac{36}{17}}=\dfrac{3}{4}\)
\(\Leftrightarrow21\left(1.16-x\right)=3\cdot\dfrac{36}{17}\cdot\left(3+\dfrac{5}{9}-\dfrac{1}{4}\right)\)
\(\Leftrightarrow21\left(1.16-x\right)=\dfrac{108}{17}\cdot\dfrac{108+20-9}{36}\)
\(\Leftrightarrow21\cdot\left(1.16-x\right)=21\)
=>1,16-x=1
hay x=0,16
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