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\(x+\frac{31}{10}=14,5+\frac{12}{10}\)
\(x+\frac{31}{10}=\frac{29}{2}+\frac{12}{10}\)
\(x+\frac{31}{10}=\frac{157}{10}\)
\(x=\frac{157}{10}-\frac{31}{10}\)
\(x=\frac{63}{5}\)
Học tốt #
\(x+\frac{31}{10}=14,5+\frac{12}{10}\)
\(\Rightarrow x+\frac{31}{10}=\frac{157}{10}\)
\(\Rightarrow x=\frac{157}{10}-\frac{31}{10}\)
\(\Rightarrow x=\frac{63}{5}\)
Vậy \(x=\frac{63}{5}\)
_Chúc bạn học tốt_
\(x+\frac{31}{10}=x+\frac{12}{10}+\frac{19}{10}=14,5+\frac{12}{10}\)
\(x+\frac{19}{10}=14,5\)
\(x+1,9=14,5\)
\(x=14,5-1,9=12,6\)
x+\(\frac{31}{10}\)=\(\frac{157}{10}\)
x=\(\frac{157}{10}-\frac{31}{10}\)
x=\(\frac{63}{5}\)
a: =>x+6,5=6,48
=>x=-0,02
b: =>259,2:x=43,2
=>x=6
c: =>x*5,3=36,04
=>x=6,8
d: =>67,89-x=13,6
=>x=54,29
1.
=3/5x(3/7+4/7)+2/5x(13/9-4/9)
=3/5x1+2/5x1
=3/5+2/5
=1
2.Xx(3/4+4/5)=7/10
Xx31/20=7/10
X =7/10:31/20
X =14/31
\(\frac{3}{5}\cdot\frac{3}{7}+\frac{3}{5}\cdot\frac{4}{7}+\frac{2}{5}\cdot\frac{13}{9}-\frac{2}{5}\cdot\frac{4}{9}\)
\(=\frac{3}{5}\cdot\left(\frac{3}{7}+\frac{4}{7}\right)+\frac{2}{5}\cdot\left(\frac{13}{9}-\frac{4}{9}\right)\)
\(=\frac{3}{5}\cdot1+\frac{2}{5}\cdot1\)\(=\frac{3}{5}+\frac{2}{5}=1\)
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\(\frac{3}{4}\cdot x+\frac{4}{5}\cdot x=\frac{7}{10}\)
\(\left(\frac{3}{4}+\frac{4}{5}\right)\cdot x=\frac{7}{10}\)
\(\frac{31}{20}\cdot x=\frac{7}{10}\)
\(x=\frac{7}{10}:\frac{31}{20}\)
\(x=\frac{14}{31}\)
\(1-x=\frac{29}{12}+\frac{32}{8}\)
\(\Rightarrow1-x=\frac{77}{12}\)
\(\Rightarrow x=1-\frac{77}{12}=\frac{-65}{12}\)
\(\frac{31}{8}.x-\frac{11}{4}=\frac{42}{12}.\frac{10}{8}-\frac{1}{3}\)
\(\Rightarrow\frac{31}{8}.x-\frac{11}{4}=\frac{35}{8}-\frac{1}{3}\)
\(\Rightarrow\frac{31}{8}.x-\frac{11}{4}=\frac{97}{24}\)
\(\Rightarrow\frac{31}{8}.x=\frac{97}{24}+\frac{11}{4}=\frac{163}{24}\)
\(\Rightarrow x=\frac{163}{24}:\frac{31}{8}=\frac{163}{93}\)
\(X\times\frac{4}{5}+\frac{1}{5}=\frac{1}{10}\)
\(X\times\frac{4}{5}=\frac{1}{10}-\frac{1}{5}\)
\(X\times\frac{4}{5}=-\frac{1}{10}\)
\(X=-\frac{1}{10}\div\frac{4}{5}\)
\(X=-\frac{1}{8}\)
\(x.\frac{4}{5}+\frac{1}{5}=\frac{1}{10}\)
\(x.\frac{4}{5}=\frac{1}{10}-\frac{1}{5}\)
\(x.\frac{4}{5}=-\frac{1}{10}\)
\(x=-\frac{1}{10}\div\frac{4}{5}\)
\(x=-\frac{1}{8}\)
\(a,x-1\dfrac{3}{5}=2\dfrac{1}{10}\\ x-\dfrac{8}{5}=\dfrac{21}{10}\\ x=\dfrac{21}{10}+\dfrac{8}{5}\\ x=\dfrac{21}{10}+\dfrac{16}{10}\\ x=\dfrac{37}{10}\\ b,5\dfrac{1}{7}:x=4\dfrac{1}{2}\\ \dfrac{36}{7}:x=\dfrac{9}{2}\\ x=\dfrac{36}{7}:\dfrac{9}{2}\\ x=\dfrac{36}{7}\cdot\dfrac{2}{9}\\ x=\dfrac{8}{7}\)
a)Ta có :
x-8,7=5 x 1,2 = 6
=> x = 6+8,7 = 14,7
Vậy x=14,7
b) Ta có
x+31/10=14,5+12/10=15,7
=> x=15,7-31/10=12,6.
Vậy x=12,6
a) ( x - 8,7 ) = 5 * 1,2
x - 8,7 = 6
x = 6 + 8,7
x = 14,7
b) x + 31/10 = 14,5 +12/10