`x : 1/2 +x xx 4 + x : 25%=34,5`
`=> x xx 2 +x xx 4 + x xx 4=34,5`
`=> x xx (2+4+4) =34,5`
`=> x xx 10 = 34,5`
`=> x= 34,5 : 10`
`=> x=3,45`
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Câu 1: (1,5 điểm) Tìm x:
a. 34,5 : 1,5 x 2 b. x 45,7 -35,7 x 100
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Câu 1: (1,5 điểm) Tìm x:
a. 34,5 : 
= 1,5 x 2 b. x 45,7 -35,7 x = 100
................................................................................................................................
a,\(\dfrac{1}{7}\text{x}\dfrac{2}{7}+\dfrac{1}{7}\text{x}\dfrac{5}{7}+\dfrac{6}{7}\) b,\(\dfrac{6}{11}\text{x}\dfrac{4}{9}+\dfrac{6}{11}\text{x}\dfrac{7}{9}-\dfrac{6}{11}\text{x}\dfrac{2}{9}\)
c, \(\dfrac{4}{25}\text{x}\dfrac{5}{8}\text{x}\dfrac{25}{4}\text{x}24\)
tìm X biết X + X x 2 = 34,5
Bài 6: Tìm x, biết
a) dfrac{3}{2} x dfrac{4}{5} - X dfrac{2}{3}
b) X x 3dfrac{1}{3} 3dfrac{1}{3} : 4dfrac{1}{4}
c) 5dfrac{2}{3} : x 3dfrac{2}{3} - 2dfrac{1}{2}
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Bài 6: Tìm x, biết
a) \(\dfrac{3}{2}\) x \(\dfrac{4}{5}\) - X =\(\dfrac{2}{3}\)
b) X x 3\(\dfrac{1}{3}\) = 3\(\dfrac{1}{3}\) : 4\(\dfrac{1}{4}\)
c) 5\(\dfrac{2}{3}\) : x = 3\(\dfrac{2}{3}\) - 2\(\dfrac{1}{2}\)
Bài 3 Tìm x
\(\dfrac{1}{2}:3+x=1\dfrac{2}{3}\)
\(2\dfrac{3}{4}-x=\dfrac{5}{6}+\dfrac{2}{3}\)
\(5\dfrac{4}{10}-x\) X\(\dfrac{3}{4}=\dfrac{2}{3}\)
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 + \(\dfrac{5}{4}\) = \(\dfrac{3}{2}+\dfrac{7}{12}\)
Bài 2 Tìm x
a) 4\(\dfrac{2}{3}:x-\dfrac{3}{5}=\dfrac{4}{3}\)
b) \(\dfrac{4}{3}+2\dfrac{1}{2}\)x \(X=2\)
c) \(X:3\dfrac{1}{3}=2\dfrac{2}{5}+\dfrac{7}{10}\)
Tìm số thập phân x biết:a) ^{text{x}}^{ }+ dfrac{3}{4} dfrac{4}{5}b) ^{text{x}} - dfrac{1}{2} dfrac{5}{8}c) ^{text{x}} x dfrac{5}{6} dfrac{4}{5} d)^{text{x}} : dfrac{5}{8} dfrac{1}{25}
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Tìm số thập phân x biết:
a) \(^{\text{x}}\)\(^{ }\)+ \(\dfrac{3}{4}\)= \(\dfrac{4}{5}\) | b) \(^{\text{x}}\) - \(\dfrac{1}{2}\) = \(\dfrac{5}{8}\) | c) \(^{\text{x}}\) x \(\dfrac{5}{6}\) = \(\dfrac{4}{5}\) | d)\(^{\text{x}}\) : \(\dfrac{5}{8}\) = \(\dfrac{1}{25}\) |
22 tháng 4 2023 lúc 11:48
Tìm X
X:3\(\dfrac{1}{15}\)-\(\dfrac{3}{4}\)=2\(\dfrac{1}{4}\)
X nhân 3\(\dfrac{2}{3}\)-1\(\dfrac{2}{3}\)=2\(\dfrac{1}{3}\)