Question

A)3/4-(x-1/2)=4/5
B) 4,2:x=-7/10

cần gấp hứa k cảm ơn mn nhìu

Answer 1

a: =>x-1/2=3/4-4/5=-1/20

=>x=-1/20+10/20=9/20

b: =>x=-21/5:7/10=-21/5x10/7=-6

Answer 2

`a,`

`3/4-(x-1/2)=4/5`

`=> x-1/2=3/4-4/5`

`=>x-1/2= -1/20`

`=> x= -1/20+1/2`

`=> x= 9/20`

`b,`

`4,2:x=-7/10`

`=>4,2:x= -0,7`

`=> x=4,2:(-0,7)`

`=> x=-6`