Trả lời:
\(194-24\div\left(44x-3\right)-25=145\)
\(\Leftrightarrow194-24\div\left(44x-3\right)=170\)
\(\Leftrightarrow24\div\left(44x-3\right)=24\)
\(\Leftrightarrow44x-3=1\)
\(\Leftrightarrow44x=4\)
\(\Leftrightarrow x=\frac{1}{11}\)
Vậy \(x=\frac{1}{11}\)
\(x\times\frac{1}{3}\div\frac{2}{9}-x\div5=1\frac{2}{5}\)
\(\Leftrightarrow x\times\frac{1}{3}\times\frac{9}{2}-x\times\frac{1}{5}=\frac{7}{5}\)
\(\Leftrightarrow x\times\frac{3}{2}-x\times\frac{1}{5}=\frac{7}{5}\)
\(\Leftrightarrow x\times\left(\frac{3}{2}-\frac{1}{5}\right)=\frac{7}{5}\)
\(\Leftrightarrow x\times\frac{13}{10}=\frac{7}{5}\)
\(\Leftrightarrow x=\frac{14}{13}\)
Vậy \(x=\frac{14}{13}\)
lp 5 chua hoc 4x moi chi hoc 44 * x thui nha!
194-24:(44×x-3)=145+25
194-24:(44×x-3)=170
24:(44×x-3)=194-170
24:(44×x-3)=24
(44×x-3)=24:24
(44×x-3)=1
44×x=1+3
44×x=4
x=4:44
x=1/11
vậy x=1/11
x×1/3:2/9-x×1/5=7/5
x×(1/3-1/5):2/9=7/5
x×2/15:2/9=7/5
x×2/15=7/5×2/9
x×2/15=14/45
x=14/45:2/15
x=14/45×15/2
x=7/3
vậy x=7/3
\(194-24\div(44\times x-3)-25=145\)
\(194-24\div(44\times x-3)=145+25\)
\(194-24\div(44\times x-3)=170\)
\(24\div(44\times x-3)=194-170\)
\(24\div(44\times x-3)=24\)
\(44\times x-3=1\)
\(44\times x=4\)
\(x=\frac{4}{44}=\frac{1}{11}\)
\(x\times\frac{1}{3}\div\frac{2}{9}-x\div5=1\frac{2}{5}\)
\(x\times\frac{3}{2}-x\times\frac{1}{5}=\frac{7}{5}\)
\(x\times(\frac{3}{2}-\frac{1}{5})=\frac{7}{5}\)
\(x\times\frac{13}{10}=\frac{7}{5}\)
\(x=\frac{7}{5}\div\frac{13}{10}=\frac{14}{13}\)
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