Question

giải phương trình

a)\(\frac{5\left(x-1\right)+2}{6}-\frac{7x-1}{4}=\frac{2\left(2x+1\right)}{7}-5\)

b)\(\frac{3x-2}{6}-5=\frac{3-2\left(x+7\right)}{4}\)

giúp mk đi

Answer 1

còn đây là câu b

\(\frac{3x-2-30}{6}=\frac{3-2x-14}{4}\)

\(\Leftrightarrow\frac{3x-32}{6}-\frac{-11-2x}{4}=0\)

\(\Leftrightarrow\frac{6x-64+33+6x}{12}\)

\(\Leftrightarrow12x=31\)

\(\Leftrightarrow x=\frac{31}{12}\)

Answer 2

\(\frac{10x-10+4-21x+3}{12}=\frac{4x+3-35}{7}\)

\(\Leftrightarrow\frac{-11x-3}{12}=\frac{4x-3}{7}\)

\(\Leftrightarrow\frac{-11x-3}{12}-\frac{4x-3}{7}=0\)

\(\frac{-77x-21-48x+36}{84}=0\)

\(\Leftrightarrow125x=15\)

\(\Leftrightarrow x=\frac{3}{25}\)

Answer 3

thanks nha