Question

a) x+1/2=-6/7

b) x-3/4=9/8 

Tes trình độ của các bn

Answer 1

`a , x + 1/2 = -6/7`

`=> x = -6/7 - 1/2`

`=> x = -12/14 - 7/14`

`=> x = -19/14`

Vậy: `x = -19/14`

`b, x- 3/4 = 9/8`

`=> x = 9/8 + 3/4`

`=> x = 9/8 + 6/8`

`=> x = 15/8`

Vậy: `x=15/8`

Answer 2

a: \(x+\dfrac{1}{2}=-\dfrac{6}{7}\)

=>\(x=-\dfrac{6}{7}-\dfrac{1}{2}=-\dfrac{12}{14}-\dfrac{7}{14}=-\dfrac{19}{14}\)

b: \(x-\dfrac{3}{4}=\dfrac{9}{8}\)

=>\(x=\dfrac{9}{8}+\dfrac{3}{4}=\dfrac{9}{8}+\dfrac{6}{8}=\dfrac{15}{8}\)

Answer 3

a; \(x+\dfrac{1}{2}\) = - \(\dfrac{6}{7}\)

      \(x\)      = - \(\dfrac{6}{7}\) - \(\dfrac{1}{2}\)

      \(x\)     = - \(\dfrac{19}{14}\)

Vậy \(x=-\dfrac{19}{14}\)

b; \(x-\dfrac{3}{4}\) = \(\dfrac{9}{8}\)

    \(x\)    = \(\dfrac{9}{8}\) + \(\dfrac{3}{4}\)

    \(x\)    = \(\dfrac{9}{8}\) + \(\dfrac{6}{8}\)

   \(x=\dfrac{15}{8}\) 

Vậy \(x=\dfrac{15}{8}\)

Answer 4

a: \(x+\dfrac{1}{2}=-\dfrac{6}{7}\)

=>\(x=-\dfrac{6}{7}-\dfrac{1}{2}=-\dfrac{12}{14}-\dfrac{7}{14}=-\dfrac{19}{14}\)

b: \(x-\dfrac{3}{4}=\dfrac{9}{8}\)

=>\(x=\dfrac{9}{8}+\dfrac{3}{4}=\dfrac{9}{8}+\dfrac{6}{8}=\dfrac{15}{8}\)