Question

tìm x 
mọi ng giúp với ạ

Answer 1

\(8x-4=9x+3\Leftrightarrow x=-7\)

Answer 2

=>9x+3=8x-4

=>x=-7

Answer 3

\(8x-4=9x+3\)

\(8x-9x=4+3\)

\(-x=7\)

\(\Rightarrow x=-7\)

Answer 4

\(\dfrac{2x-1}{3}=\dfrac{3x+1}{4}\)

\(\left(2x-1\right)\cdot4=\left(3x+1\right)\cdot3\)

\(8x-4=9x+3\)

\(8x-4-9x-3=0\)

\(\left(8x-9x\right)-4=3\)

\(-x-4=3\)

\(-x=3+4\)

\(-x=7\)

`=>x=-7`

Answer 5

\(\dfrac{2x-1}{3}=\dfrac{3x+1}{4}\)
\(\Leftrightarrow\left(2x-1\right)4=3\left(3x+1\right)\)
\(\Leftrightarrow8x-4=9x+3\)
\(\Rightarrow-1x=4+3\)
\(\Rightarrow x=-7\)

Answer 6

\(\left(2x-1\right).4=3.\left(3x+1\right)\)

\(8x-4=9x+3\)

\(8x-9x=3-4\)

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

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

\(x=1\)