\(\Leftrightarrow\left(\dfrac{x-11}{189}-1\right)-\left(\dfrac{x-12}{188}-1\right)=\dfrac{x-13}{187}-1\)
=>x-200=0
hay x=200
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Chương I : Số hữu tỉ. Số thực
Các câu hỏi tương tự
Tìm x, biết:
a) \(\dfrac{11}{13}-\left(\dfrac{5}{42}-x\right)=-\left(\dfrac{15}{28}-\dfrac{11}{13}\right)\)
b) \(2x.\left(x-\dfrac{1}{7}\right)=0\)
c) \(\dfrac{3}{4}+\dfrac{1}{4}:x=\dfrac{2}{5}\)
tìm x
\(\dfrac{x-11}{101}-\dfrac{x-13}{103}=\dfrac{x-17}{107}-\dfrac{x-19}{109}\)
Tìm x :
a)\(\dfrac{x-1}{50}+\dfrac{x-2}{49}=\dfrac{x-3}{48}+\dfrac{x-4}{47}\)
b)\(\dfrac{x+25}{6}+\dfrac{x+20}{11}+\dfrac{x+16}{15}+3=0\)
c)\(\dfrac{x-15}{6}+\dfrac{x-10}{11}=\dfrac{x-3}{18}+\dfrac{x-7}{14}\)
A= \(\dfrac{-5}{13}\) x \(\dfrac{-4}{13}\) x \(\dfrac{-3}{13}\) x......x \(\dfrac{4}{13}\) x \(\dfrac{5}{13}\)
Chobaitoansau:
Mdfrac{75-dfrac{6}{13}+dfrac{3}{17}-dfrac{3}{19}}{257-dfrac{22}{13}+dfrac{11}{17}-dfrac{11}{19}}
2Ndfrac{1,1+0,19-1,32}{2,06+0,54}-left(dfrac{1}{2}+dfrac{1}{3}right):2
Pleft(5dfrac{7}{8}-2dfrac{1}{4}-0,5right):2dfrac{23}{26}
a, Tính M, P
b, Tìm x∈ Z, biết N x P
Đọc tiếp
\(Chobaitoansau:\)
\(M=\dfrac{75-\dfrac{6}{13}+\dfrac{3}{17}-\dfrac{3}{19}}{257-\dfrac{22}{13}+\dfrac{11}{17}-\dfrac{11}{19}}\)
\(2N=\dfrac{1,1+0,19-1,32}{2,06+0,54}-\left(\dfrac{1}{2}+\dfrac{1}{3}\right):2\)
\(P=\left(5\dfrac{7}{8}-2\dfrac{1}{4}-0,5\right):2\dfrac{23}{26}\)
a, Tính M, P
b, Tìm x∈ Z, biết N < x < P
Tìm x biết:
\(a,\dfrac{12-7x}{-13}=\dfrac{4-3x}{-5}\)
b,\(\dfrac{x}{5}=\dfrac{y}{7}\) và \(x+y=48\)
c,\(\dfrac{x}{3}=\dfrac{y}{4}\)và \(x^2+y^2=100\)
tìm x biết
a) dfrac{1}{2}x+2dfrac{1}{2}3dfrac{1}{2}x-dfrac{3}{4}
b) dfrac{2}{3}x-dfrac{2}{5}dfrac{1}{2}x-dfrac{1}{3}
c) dfrac{1}{3}x+dfrac{2}{5}left(x+1right)0
d) dfrac{2}{3}-dfrac{1}{3}left(x-dfrac{3}{2}right)-dfrac{1}{2}left(2x+1right)5
e) dfrac{x+2015}{5}+dfrac{x+2016}{4}dfrac{x+2017}{3}+dfrac{x+2018}{2}
Đọc tiếp
tìm x biết
a) \(\dfrac{1}{2}x+2\dfrac{1}{2}=3\dfrac{1}{2}x-\dfrac{3}{4}\)
b) \(\dfrac{2}{3}x-\dfrac{2}{5}=\dfrac{1}{2}x-\dfrac{1}{3}\)
c) \(\dfrac{1}{3}x+\dfrac{2}{5}\left(x+1\right)=0\)
d) \(\dfrac{2}{3}-\dfrac{1}{3}\left(x-\dfrac{3}{2}\right)-\dfrac{1}{2}\left(2x+1\right)=5\)
e) \(\dfrac{x+2015}{5}+\dfrac{x+2016}{4}=\dfrac{x+2017}{3}+\dfrac{x+2018}{2}\)
1)Tính giá trị biểu thức:
dfrac{left(13dfrac{1}{4}-2dfrac{5}{27}-10dfrac{5}{6}right).230dfrac{1}{25}+46dfrac{3}{4}}{left(1dfrac{3}{7}+dfrac{10}{3}right):left(12dfrac{1}{3}-14dfrac{2}{7}right)}
2)Tìm x biết:
a) 42+dfrac{3}{7}.left|3x-1right|12
b) left|2x-1right|left|x+2right|
c) 2.3^x.3^218 với xin N
Đọc tiếp
1)Tính giá trị biểu thức:
\(\dfrac{\left(13\dfrac{1}{4}-2\dfrac{5}{27}-10\dfrac{5}{6}\right).230\dfrac{1}{25}+46\dfrac{3}{4}}{\left(1\dfrac{3}{7}+\dfrac{10}{3}\right):\left(12\dfrac{1}{3}-14\dfrac{2}{7}\right)}\)
2)Tìm x biết:
a) \(42+\dfrac{3}{7}.\left|3x-1\right|=12\)
b) \(\left|2x-1\right|=\left|x+2\right|\)
c) \(2.3^x.3^2=18\) với \(x\in N\)
Bài1
a,dfrac{x+1}{111}dfrac{y+2}{222}dfrac{z+3}{333} và 5x+2y+z1100
b,dfrac{x}{2}dfrac{y}{3} và x^2.y^2 52
c,dfrac{x}{5}dfrac{y}{3} vàx^2-y^216
d,dfrac{x}{2}dfrac{y}{3} và x.y54
e, dfrac{x}{4}dfrac{y}{3} và x.y12
Đọc tiếp
Bài1
a,\(\dfrac{x+1}{111}=\dfrac{y+2}{222}=\dfrac{z+3}{333}\) và 5x+2y+z=1100
b,\(\dfrac{x}{2}=\dfrac{y}{3}\) và \(x^2.y^2\)= 52
c,\(\dfrac{x}{5}=\dfrac{y}{3}\) và\(x^2-y^2=16\)
d,\(\dfrac{x}{2}=\dfrac{y}{3}\) và x.y=54
e, \(\dfrac{x}{4}=\dfrac{y}{3}\) và x.y=12