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\(x+\frac{5}{13}+\frac{10}{26}+\frac{15}{39}+\frac{20}{52}+\frac{401}{104}=\frac{25}{13}.\)
\(\Rightarrow x+\left(\frac{5}{13}+\frac{10}{26}+\frac{15}{39}+\frac{20}{52}+\frac{40}{104}\right)=\frac{25}{13}\)
\(\Rightarrow x+\frac{25}{13}=\frac{25}{13}\)
\(\Rightarrow x=\frac{25}{13}-\frac{25}{13}\)
\(\Rightarrow x=0\)
\(\leftrightarrow k-nha!!!!\)
\(x+\frac{5}{13}+\frac{10}{26}+\frac{15}{39}+\frac{20}{52}+\frac{40}{104}=\frac{25}{13}\) \(x+\left(\frac{5}{13}+\frac{10}{26}+\frac{15}{39}+\frac{20}{52}+\frac{40}{104}\right)=\frac{25}{13}\) \(x+\frac{25}{13}\) \(=\frac{25}{13}\) \(x\) \(=\frac{25}{13}-\frac{25}{13}\) \(x=0\)
\(\frac{15}{16}+\frac{x}{13}=\frac{46}{52}\)
\(\Rightarrow\frac{x}{13}=\frac{46}{52}-\frac{15}{16}\)
\(\Rightarrow\frac{x}{13}=\frac{-11}{208}\)
\(\Rightarrow x=\frac{\left(-11\right).13}{208}\)
\(\Rightarrow x=\frac{-11}{16}\)
Vậy x = \(\frac{-11}{16}\)
_Chúc bạn học tốt_
\(y.\frac{52}{26}=\frac{17}{13}\)
\(y=\frac{17}{13}:\frac{52}{26}\)
\(y=\frac{17}{26}\)
\(4\frac{1}{2}:y=\frac{2}{7}\)
\(\frac{9}{2}:y=\frac{2}{7}\)
\(y=\frac{9}{2}:\frac{2}{7}\)
\(y=\frac{63}{4}\)
26 x 4 + 52 + 3 x 26 + 26
= 104 + 52 + 78 + 26
= ( 52 + 78 ) + ( 104 + 26 )
= 130 + 130
= 260
26 x 4 + 52 + 3 x 26 + 26
= 104 + 52 + 78 + 26
= ( 104 + 26 ) + ( 52 + 78 )
= 130 + 130
= 260
Học tốt nha
46 x 17 - 38 x 46 - 26 x 44 - 46
= 782 - 1748 - 1144 - 46
= -966 - 1098
= -2064 nhé
(36 + 52) x 46 + (36 + 52) x 53 + 88
= 88 x 46 + 88 x 141
= 4048 + 12408
= 16456
x/13+15/26=46/52
=> x/13= 46/52-15/26
=> x/13=4/13
=> x=4
x/3 + 15/26 = 46/52
x/13 + 15/26 = 23/26
x/13 = 23/26 - 15/26
x/13 = 4/13
Có x/13 = 4/13
Suy ra : x = 4
Vậy x = 4