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x + x/3 .45 + x/2 .14=230
x+15x +7x =230
23x=230
x=10
(dấu . là nhân )
mk k chắc
x + x * 1/3 : 2/9 + x : 2/7 = 252
x + x * 3/2 + x * 2/7 = 252
x * ( 1 + 3/2 + 2/7 ) =252
x * 39/14 =252
x = 252 : 39/14
x = 3528/39
\(\frac{4}{3}+\frac{1}{3}:x=\frac{5}{2}\)
\(\frac{1}{3}:x=\frac{5}{2}-\frac{4}{3}\)
\(\frac{1}{3}:x=\frac{7}{6}\)
\(x=\frac{1}{3}:\frac{7}{6}\)
\(x=\frac{2}{7}\)
4/3 + 1/3 : x = 5/2
5/3 : x = 5/2
x = 5/2 x 5/3
x = 25/6
Ko chắc chắn
Hok tốt !
# MissyGirl #
\(x:0,25+86\cdot x+x:0,1=82,4\)
\(x\cdot4+86\cdot x+x\cdot10=82,4\)
\(x\left(4+86+10\right)=82,4\)
\(x\cdot100=82,4\\ x=82,4:100\\ x=0,824\)
\(x\div\frac{1}{2}+\frac{3}{4}=\frac{9}{8}\)
\(\Rightarrow x\div\frac{1}{2}=\frac{9}{8}-\frac{6}{8}\)
\(\Rightarrow x\div\frac{1}{2}=\frac{3}{8}\)
\(\Rightarrow x=\frac{3}{8}\times\frac{1}{2}\)
\(\Rightarrow x=\frac{3}{16}\)
\(x:\frac{1}{2}+\frac{3}{4}=\frac{9}{8}\)
\(\Leftrightarrow x:\frac{1}{2}=\frac{9}{8}-\frac{3}{4}\)
\(\Leftrightarrow x:\frac{1}{2}=\frac{3}{8}\)
\(\Leftrightarrow x=\frac{3}{8}.\frac{1}{2}\)
\(\Rightarrow x=\frac{3}{16}\)
vậy...
\(\frac{3}{5}+\frac{2}{5}:x=\frac{4}{5}\)
\(=>\frac{2}{5}:x=\frac{4}{5}-\frac{3}{5}\)
\(=>\frac{2}{5}:x=\frac{1}{5}\)
\(=>x=\frac{2}{5}:\frac{1}{5}\)
\(=>x=2\)
Vậy x = 2
\(\frac{x}{2}+\frac{x}{3}+\frac{x}{4}=25\)
\(x\times\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\right)=25\)
\(x\times\frac{13}{12}=25\)
\(x=25:\frac{13}{12}\)
x = 300/13
\(x\div2+x\div3+x\div4=25\)
\(x\div\left(2+3+4\right)=25\)
\(x\div9=25\)
\(x=25\times9\)
\(x=225\).
__Các ARMY đi qua cho mk xin cái k !__