tìm x biết
a)x+30%x = -1,3
b) \(\frac{\left(1,16-x\right).5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right).2\frac{2}{17}}=75\%\)
Những câu hỏi liên quan
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 biết:
\(\frac{\left(1,16-x\right).5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right).2\frac{2}{17}}=75\%\)
Bài 1: Tìm x biết:
a) |x-3|-x=1
b) 4x+1+ 4x+2+4x+3=5376
c)\(\frac{\left(1,16-x\right).5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right).2\frac{2}{11}}\)=75%
\(\frac{\left(1,16-x0\times\right)5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right)\times2\frac{2}{17}}=75\%\)
Tim x
Xem chi tiết
\(\frac{\left[1,16-x\right].5,25}{\left[10\frac{5}{9}-7\frac{1}{4}\right].2\frac{2}{17}}\)
\(\frac{\left[1,16-x\right].5,25}{\left[10\frac{5}{9}-7\frac{1}{4}\right].2\frac{2}{17}}\)
\(\Leftrightarrow\frac{\left[1,16-x\right].5,25}{\left[\frac{95}{9}-\frac{29}{4}\right].\frac{36}{17}}\)
\(\Leftrightarrow\frac{\left[1,16-x\right].5,25}{\frac{119}{36}.\frac{36}{17}}\)
\(\Leftrightarrow\frac{\left[1,16-x\right].5,25}{7}\)
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\(\frac{\left(1,16-x\right)\cdot5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right)\cdot2\frac{2}{17}}=75\%\)
tìm x
tìm x biết:
a,\(7,5x:\left(9-6\frac{13}{21}\right)=2\frac{13}{25}\)
b,\(\frac{\left(1,16-x\right)\cdot5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right)\cdot2\frac{2}{17}}\)=75%
Tìm x
\(\frac{\left(1,16-x\right)\times5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right)\times2\frac{2}{17}}=\frac{3}{4}\)
Ta co:
\(\left[\left(\frac{29}{25}-x\right).\frac{21}{4}\right]:\left[\left(\frac{95}{9}-\frac{29}{4}\right).\frac{36}{17}\right]=\frac{3}{4}\)
\(\left[\left(\frac{29}{25}-x\right).\frac{21}{4}\right]:\left(\frac{119}{36}.\frac{36}{17}\right)=\frac{3}{4}\)
\(\left[\left(\frac{29}{25}-x\right).\frac{21}{4}\right]:7=\frac{3}{4}\)
\(\left(\frac{29}{25}-x\right).\frac{21}{4}=\frac{3}{4}.7=\frac{21}{4}\)
\(\frac{29}{25}-x=\frac{21}{4}:\frac{21}{4}=1\)
\(x=\frac{29}{25}-1=\frac{4}{25}\)
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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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