Question

Answer 1

Câu 2: 

a: x-1/2=-3/4

=>x=-3/4+1/2=-3/4+2/4=-1/4

b: x+7/5=1/10

=>x=1/10-7/5=1/10-14/10=-13/10

c: -1/12-x=3/8

=>x=-1/12-3/8=-2/24-9/24=-11/24

Answer 2

1. 13/25; -31/29; 7/8; 11/24; 35/41

2. \(a)x=-3/4-(-1/2)=-3/4+1/2=-3/4+2/4=-1/4\)

\(b)x=1/10+(-7/5)=1/10+(-14/10)=-13/10\)

\(c)x=-1/12-3/8=-2/24-9/24=-11/24\)

Answer 3

câu 1 :

số đối của p/số \(\dfrac{13}{-25}\) là \(\dfrac{-13}{-25}\)

........................ \(\dfrac{31}{29}\) là \(\dfrac{-31}{29}\)

........................ \(\dfrac{7}{-8}\) là \(\dfrac{-7}{-8}\)

........................ - \(\dfrac{11}{24}\) là \(\dfrac{-11}{24}\) hoặc \(\dfrac{11}{-24}\)

........................ \(\dfrac{-35}{41}\) là \(\dfrac{35}{41}\)

câu 2 :

a, x-1/2=-3/4

=>x=-3/4+1/2=-3/4+2/4=-1/4

b, x+7/5=1/10

=>x=1/10-7/5=1/10-14/10=-13/10

c,  -1/12-x=3/8

=>x=-1/12-3/8=-2/24-9/24=-11/24