\(\frac{3x-5}{4}=0,3-9,11\)
\(\frac{3x-5}{4}=-8,81\)
\(3x-5=-35,24\)
\(3x=-30,24\)
\(x=-10,08\)
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\(-\frac{3}{5}:\frac{3}{14}+0,5x=12\)
\(-\frac{14}{5}+0,5x=12\)
\(0,5x=\frac{74}{5}\)
\(x=\frac{148}{5}\)
Tính \(\frac{3.x-5}{4}=0,3-9,11\)
\(\frac{-3}{5}:\frac{3}{14}+0,5.x=12\)
tìm x
\(12\times\left(\frac{3}{4}-5x\right)=\frac{4}{5}-3x\)
tính
\(2\frac{5}{7}+\frac{3}{14}-\frac{6}{7}+0,5+\frac{9}{14}\)
Tìm x
x - \(\frac{0,375-0,3+\frac{3}{17}-\frac{3}{19}}{-0,625+0,5-\frac{5}{17}-\frac{5}{19}}\)= \(\frac{1}{4}\)
a; 3x - 2 = x + 7
b) \(\frac{2}{3}x-\frac{5}{4}=\frac{7}{5}x-\frac{8}{5}\)
2, tính hợp lí: \(\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}\)
\(B=\frac{x}{y}+\frac{\frac{1}{4}+\frac{5}{8}-\frac{7}{13}}{\frac{-2}{12}-\frac{10}{24}+\frac{14}{39}}\) (x=0,5;y=3)
\(\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,265+0,5-\frac{5}{11}-\frac{5}{12}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-\frac{5}{4}}\)
bài 1. Tính giái trị các biểu thức là phân số :
a) \(M=\frac{\frac{3}{5}+\frac{3}{7}+\frac{3}{11}}{\frac{4}{5}+\frac{4}{7}-\frac{4}{11}}\)
b)\(N=\left(\frac{3}{10}-\frac{4}{15}-\frac{7}{20}\right).\frac{5}{19}\)
\(\frac{ }{\left(\frac{1}{14}+\frac{1}{7}-\frac{-3}{35}\right).\frac{-4}{3}}\)
c) \(H=x+\frac{0,2-0,375+\frac{5}{11}}{-0,3+\frac{9}{16}-\frac{15}{22}vs,x=\frac{-1}{3}}\)
bài 2 : tìm x biết :
a)\(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)
b)\(\frac{x-1}{2009}+\frac{x-2}{2008}=\frac{x-3}{2007}+\frac{x-4}{2006}\)
c)\(\frac{x+2}{327}+\frac{x+3}{326}+\frac{x+4}{325}+\frac{x+5}{324}+\frac{x+349}{5}=0\)
giúp mình với m.n
tìm x
a) ( 152\(\frac{2}{4}\)-148\(\frac{3}{8}\)) : 0,2 = X : 0,3
b) ( (6\(\frac{3}{5}\)-3\(\frac{3}{14}\)) -2,5 ) : ( 21-1,25) = X : 5\(\frac{5}{6}\)
c) (4-\(\frac{3}{4}\)) : ( 2\(\frac{1}{3}\)-1\(\frac{1}{9}\)) = 31. X : ( 45\(\frac{-10}{63}\)-44\(\frac{25}{84}\))
d) \(\frac{2.X+3}{5.X+2}\)=\(\frac{3.X-4}{7}\)
e) \(\frac{3.X-1}{40-5.X}\)=\(\frac{25-3.X}{5.X-34}\)
\(\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{0,625+0,5-\frac{5}{11}-\frac{5}{12}}\)
