Question

a) -3/2 - 2x + 3/4 = 2

b) x/2 - (3x/5 - 13/5) = -(7/5 + 7/10 .x)

c) 2/3x - 3/12 = 4/5 - (7/x - x)

d) 3 - 2/2x-3 = 2/5 + 2/9-6x - 3/2

SẼ TICK NẾU XONG TỐI NAY

Answer 1

a)\(-\frac{3}{2}-2x+\frac{3}{4}=2\)

\(\Leftrightarrow-2x=2+\frac{3}{2}-\frac{3}{4}=\frac{11}{4}\)

\(\Leftrightarrow x=\frac{11}{4}:\left(-2\right)=-\frac{11}{8}\)

Answer 2

b , pt <=> \(\frac{x}{2}-\frac{3x}{5}+\frac{13}{5}=-\frac{7}{5}-\frac{7}{10}x\) <=> \(\frac{3}{5}x\) = -4 <=> x = \(\frac{-20}{3}\)

c , \(\frac{2}{3x}-\frac{3}{12}\) = \(\frac{4}{5}-\left(\frac{7}{x}-x\right)\) (ĐK : x khác 0 )

<=> \(\frac{23}{3x}\) - x =\(\frac{21}{20}\) <=>\(-3x^2-\frac{21}{20}.3x+23=0\Leftrightarrow\left[{}\begin{matrix}x=\\x=\end{matrix}\right.\)...

Answer 3

a) \(-\frac{3}{2}-2x+\frac{3}{4}=2\)

⇔ \(-2x=2+\frac{3}{2}-\frac{3}{4}\)

⇔ \(-2x=\frac{11}{4}\)

⇔ \(x=\frac{11}{4}:\left(-2\right)\)

=> \(x=-\frac{11}{8}\)

Vậy \(x=-\frac{11}{8}\).

Mình chỉ làm câu a) thôi nhé.

Chúc bạn học tốt!