`a, 133 + 7x = 232 - 2x`
`9x = 99`
`x =11`
`b, 120 = 171 + 3x`
`-21 = 3x`
`x = -7`
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21 tháng 5 2022 lúc 21:18
Tìm x;
a, \(\dfrac{x}{19}< \dfrac{7}{57}\)
b, \(\dfrac{15}{11}< \dfrac{5}{x}\)
c, 100,1 < x6 + 6x < 111,1
bài 2: kết quả phép tính \(\dfrac{7}{19}\) x \(\dfrac{1}{3}\) + \(\dfrac{7}{19}\) x \(\dfrac{2}{3}\)=
a. \(\dfrac{14}{21}\)
b.\(\dfrac{21}{19}\)
c.\(\dfrac{14}{57}\)
d.\(\dfrac{7}{19}\)
20 tháng 9 2023 lúc 17:35
\(a,\dfrac{15-x}{14}=\dfrac{5}{7}\)
\(b,\dfrac{x}{9}=\dfrac{17}{3}\)
\(c,15-\dfrac{x}{2}=\dfrac{3}{7}\)
Tìm x
tìm x
a) \(1\dfrac{1}{2}:x=\dfrac{1}{2}\) b)\(\dfrac{7}{9}-x=\dfrac{2}{3}\) c)\(\dfrac{8}{7}:x=\dfrac{6}{7}\) d)\(\dfrac{9}{5}-x=\dfrac{3}{7}\)
\(\dfrac{7}{19}\) x \(\dfrac{1}{3}\) + \(\dfrac{7}{19}\)x \(\dfrac{2}{3}\)
Tìm x:
a) x +\(\dfrac{4}{15}\) = \(\dfrac{4}{12}\) b) x - \(\dfrac{5}{8}\) = \(1\dfrac{2}{3}\)
20 tháng 9 2023 lúc 19:17
\(3\dfrac{7}{8}\times x-2\dfrac{3}{4}=3\dfrac{6}{12}\times\dfrac{10}{8}-\dfrac{1}{3}\)
Tìm x
Tìm y
\(\dfrac{2}{5}\) X y : \(\dfrac{7}{4}=\dfrac{7}{8}\)
2\(\dfrac{2}{5}\) : y x 1\(\dfrac{1}{4}\) = 2\(\dfrac{3}{5}\)
\(\dfrac{12}{5}-1\dfrac{2}{5}x\) y = 1\(\dfrac{1}{4}\)
dfrac{15}{14} : dfrac{10}{21} x dfrac{1}{5}
5 x dfrac{1}{5} + dfrac{1}{5}
7 : dfrac{1}{5} - dfrac{1}{5}
6 + dfrac{1}{5} : 2
8 - dfrac{1}{5} x 7
Đọc tiếp
\(\dfrac{15}{14}\) : \(\dfrac{10}{21}\) x \(\dfrac{1}{5}\)
\(5\) x \(\dfrac{1}{5}\) + \(\dfrac{1}{5}\)
\(7\) : \(\dfrac{1}{5}\) - \(\dfrac{1}{5}\)
\(6\) + \(\dfrac{1}{5}\) : \(2\)
\(8\) - \(\dfrac{1}{5}\) x \(7\)
Tìm x:
\(\dfrac{3}{5}\) : x = \(\dfrac{1}{3}+\dfrac{1}{2}\) x : \(\dfrac{7}{12}\) = 2 x - \(\dfrac{3}{2}\) = \(\dfrac{11}{4}-\dfrac{5}{4}\) x + \(\dfrac{5}{4}\) = \(\dfrac{3}{2}+\dfrac{7}{12}\)