\(\frac{3}{x}+\frac{4}{3}=\frac{5}{6}\)

\(\frac{3}{x}=\frac{5}{6}-\frac{4}{3}\)

\(\frac{3}{x}=\frac{-1}{2}\)

\(\Rightarrow3.2=\left(-1\right).x\)

\(\Rightarrow6=\left(-1\right).x\)

\(\Rightarrow x=6:\left(-1\right)\)

\(\Rightarrow x=-6\)

\(\frac{x}{2}-\frac{2}{y}=\frac{1}{2}\)

\(\Rightarrow\frac{x}{2}-\frac{1}{2}=\frac{2}{y}\)

\(\Rightarrow\frac{x-1}{2}=\frac{2}{y}\)

\(\Rightarrow\hept{\begin{cases}x-1=2\\2=y\end{cases}\Rightarrow}\hept{\begin{cases}x=3\\y=2\end{cases}}\)

\(b,\frac{3}{x}+\frac{4}{3}=\frac{5}{6}\)

\(\Rightarrow\frac{3}{x}=\frac{5}{6}-\frac{4}{3}\)

\(\Rightarrow\frac{3}{x}=\frac{5}{6}-\frac{8}{6}\)

\(\Rightarrow\frac{3}{x}=\frac{-3}{6}\)

\(\Rightarrow x\cdot(-3)=18\Rightarrow x=-6\)

Bài 1:

a, \(\frac{1}{-16}-\frac{3}{45}=\frac{-1}{16}-\frac{1}{15}\)

\(=\frac{-15}{240}-\frac{16}{240}\)

\(=\frac{-31}{240}\)

b, \(=\frac{-10}{12}-\frac{-12}{12}\)

\(=\frac{2}{12}=\frac{1}{6}\)

c, \(=\frac{-30}{6}-\frac{1}{6}\)

\(=\frac{-31}{6}\)

Bài 2:

a, \(x=-\frac{1}{2}-\frac{3}{4}\)

\(x=-\frac{1}{4}\)

b,   \(\frac{1}{2}+x=-\frac{11}{2}\)

\(x=-\frac{11}{2}-\frac{1}{2}\)

\(x=-6\)

Bạn nhớ k đúng và chọn câu trả lời này nhé!!!! Mình giải đúng và chính xác hết ^_^

\(a.=\left(\frac{153}{37}-\frac{19}{5}+\frac{199}{23}\right)-\left(\frac{116}{37}-\frac{188}{29}\right)\)

\(=\frac{153}{37}-\frac{19}{5}+\frac{199}{23}-\frac{116}{37}+\frac{188}{29}\)

\(=\frac{37}{37}-\frac{19}{5}+\frac{199}{23}+\frac{188}{29}\)tự giải tiếp ^^

\(b.=\frac{8}{3}.\frac{-15}{4}.\frac{4}{5}\)

\(=\frac{8.\left(-15\right).4}{3.4.5}\)

\(=\frac{-480}{60}=-8\)

thank u vẻ rỳ much

a)\(19\frac{5}{8}:\frac{7}{12}-15\frac{1}{4}:\frac{7}{12}\)

=(\(19\frac{5}{8}-15\frac{1}{4}\)):\(\frac{7}{12}\)

=(\(19\frac{10}{16}-15\frac{4}{16}\)):\(\frac{7}{12}\)

=\(4\frac{6}{16}:\frac{7}{12}\)

=\(\frac{35}{8}:\frac{7}{12}\)

=\(\frac{35}{8}\cdot\frac{12}{7}\)

=\(\frac{15}{2}\)

b)2/5*1/3-2/15:1/5+3/5*1/3

=2/15-2/3+1/5

=-8/15+1/5

=-1/3

aidi qua dong tinh nho h chom minh nhe

\(2^x.4=32\)                                                        

\(2^x=8\)

\(2^x=2^3\)

\(\Rightarrow x=3\)

\(2^x.4=32\)

\(2^x=32:4\)

\(2^x=8=2^3\)

\(>>x=3\)

\(x^{15}=x^3\)

\(2^{15}=32^3\)

\(\left(2.x+1\right)^3=125\)

\(\left(2.x+1\right)^3=5^3\)

\(2.x+1=5\)

\(2.x=6\)

\(x=6:2=3\)

a)\(\left(x-32\right):16-13=48\)

\(\left(x-32\right):16=48+13\)

\(x+32=61.16\)

\(x+32=976\)

\(x=976-32\)

\(x=944\)

b) \(-2\left(2x-8\right)+\left(4-2x\right)=-72\)

\(-4x+16+4-2x=-72\)

\(-4x-2x=-72-16-4\)

\(-6x=-92\)

\(x=\frac{-92}{-6}=\frac{46}{3}\)

hok tốt!!

( x - 32 ) : 16 - 13 = 48

=> ( x - 32 ) : 16 = 48 + 13

=> ( x - 32 ) : 16 = 61

=> x - 32 = 61 . 16

=> x - 32 = 976

=> x = 976 + 32

=> x = 1008

b) \(\frac{4}{9}x-\frac{1}{2}=\frac{-5}{9}\)

\(\Rightarrow\frac{4}{9}x=\frac{-5}{9}+\frac{1}{2}\)

\(\Rightarrow\frac{4}{9}x=\frac{-1}{18}\)

\(\Rightarrow x=\frac{-1}{18}:\frac{4}{9}\)

\(\Rightarrow x=\frac{-1}{8}\)