Question

c) (x - 2)/3 = (x + 1)/4

Answer 1

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

=> (x - 2) . 4 = (x +1) . 3

=> 4x - 8 = 3x + 3

=> 4x - 3x = 3 + 8

=> x = 11

Answer 2

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

\(\Leftrightarrow\dfrac{4x-8}{12}=\dfrac{3x+3}{12}\)

\(\Leftrightarrow4x-8=3x+3\)

\(\Leftrightarrow4x-3x=3+8\)

\(\Leftrightarrow x=11\)

Answer 3

(x+1)4

=> (x - 2) . 4 = (x +1) . 3

=> 4x - 8 = 3x + 3

=> 4x - 3x = 3 + 8

=> x = 11

Vậy phương trình có tập nghiệm S=(2)