Question

25 - (30 + x) = x - (27 - 8)

Answer 1

25 - (30 + x) = x - (27 - 8)

25-(30+x)=x-19

25-x=(30+x)-19

25-x=30-19+x

25-x=11+x

25-11=x+x

14=2x

x=14:2

x=7

Vậy x=7

Answer 2

25 - (30 + x) = x - (27 - 8)

25-(30+x)=x-21

30+x=25-x-21

30+x=25-21-x

30+x=4-x

x=4-x-30

x=-26

Answer 3

25-(30+x)=x-(27-8)

25-30-x=x-27+8

-x-x=-27+8+30-25

-2x=-14

x=(-14):(-2)

x=7

các bạn cho mk vài li-ke cho tròn 770 với 

Answer 4

25 - ( 30 + x ) = x - ( 27 - 8 )

= 25 - 30 - x   = x - 27 + 8

= -5 - x          = x-19

= -x-x            = -19 + 5

= -x-x            = -14

= -2x             = - 14

= -x               = -7 

= x                = 7