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\(x+\frac{15}{7}=\frac{9}{2}\)
\(x=\frac{9}{2}-\frac{15}{7}=\frac{33}{14}\)
\(x-\frac{3}{4}=\frac{7}{2}\)
\(x=\frac{7}{2}+\frac{3}{4}=\frac{17}{4}\)
\(x.\frac{7}{8}=\frac{12}{5}\)
\(x=\frac{12}{5}:\frac{7}{8}=\frac{96}{35}\)
\(\frac{5}{6}:x=\frac{4}{3}\)
\(x=\frac{5}{6}:\frac{4}{3}=\frac{5}{8}\)
- a) x=9/2-15/7=33/14
- b) x=7/2+3/4=17/4
- c) x=12/5:7/8=61/35
- d) x=5/6:4/3=5/8
- k nha
\(a)x\times\frac{4}{5}+3=12\frac{1}{4}\)
\(x\times\frac{4}{5}+3=\frac{49}{4}\)
\(x\times\frac{4}{5}=\frac{49}{4}-3\)
\(x\times\frac{4}{5}=\frac{37}{4}\)
\(x=\frac{37}{4}:\frac{4}{5}\)
\(\Rightarrow x=\frac{185}{16}\)
\(\frac{4}{3}+x.\frac{2}{3}-\frac{1}{4}=\frac{53}{12}\)
\(x.\frac{2}{3}-\frac{1}{4}=\frac{53}{12}-\frac{4}{3}\)
\(x.\frac{2}{3}-\frac{1}{4}=\frac{37}{12}\)
\(x.\frac{2}{3}=\frac{37}{12}+\frac{1}{4}\)
\(x.\frac{2}{3}=\frac{10}{3}\)
\(x=\frac{10}{3}:\frac{2}{3}\)
\(x=\frac{30}{6}=5\)
Vậy x = 5
mik ko chắc
\(\frac{4}{3}+x.\frac{2}{3}-\frac{1}{4}=4\frac{5}{12}\)
\(\frac{4}{3}+x.\frac{2}{3}=4\frac{5}{12}+\frac{1}{4}\)
\(\frac{4}{3}+x.\frac{2}{3}=\frac{53}{12}+\frac{1}{4}\)
\(\frac{4}{3}+x.\frac{2}{3}=\frac{14}{3}\)
\(x.\frac{2}{3}=\frac{14}{3}-\frac{4}{3}\)
\(x.\frac{2}{3}=\frac{10}{3}\)
\(x=\frac{10}{3}:\frac{2}{3}\)
\(x=5\)
\(\frac{12}{5}\): x = \(\frac{8}{3}\)
x = \(\frac{8}{3}\): \(\frac{12}{5}\)
x = \(\frac{10}{9}\)
9/4-x:3/11=4/3
<=>x:3/11=9/4-4/3
<=>x:3/11=11/12
<=> x=11/12.3/11
<=> x1/4
Chúc bạn hk tốt~~~
a)
\(x.\frac{7}{9}=\frac{2}{3}+2\frac{1}{2}\)
\(x.\frac{7}{9}=\frac{19}{6}\)
\(x=\frac{19}{6}:\frac{7}{9}\)
\(x=\frac{57}{14}\)
b) \(\frac{5}{7}+x:\frac{9}{4}=\frac{4}{3}\)
\(x:\frac{9}{4}=\frac{4}{3}-\frac{5}{7}\)
\(x:\frac{9}{4}=\frac{13}{21}\)
\(x=\frac{13}{21}.\frac{9}{4}\)
\(x=\frac{39}{28}\)
\(\frac{9}{4}-x\div\frac{3}{11}=\frac{4}{3}\Leftrightarrow-x\div\frac{3}{11}=\frac{9}{4}-\frac{4}{3}\)
\(\Leftrightarrow-x\div\frac{3}{11}=\frac{11}{12}\Leftrightarrow-x=\frac{1}{4}\Leftrightarrow x=\frac{-1}{4}\)
\(\frac{9+x}{12-x}=\frac{4}{3}\)
\(\left(9+x\right)\cdot3=\left(12-x\right)\cdot4\)
\(9\cdot3+x\cdot3=12\cdot4-x\cdot4\)
\(27+x\cdot3=48-x\cdot4\)
\(x\cdot3+x\cdot4=48-27\)
\(x\cdot\left(3+4\right)=48-27\)
\(x\cdot7=21\)
\(x=21:7\)
\(x=3\)
\(\left(9+x\right)\cdot3=4\left(12-x\right)\)
\(27+3x=48-4x\)
\(3x+4x=48-27\)
\(7x=21\)
\(x=21:7\)
\(x=3\)