Question

tìm x

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

NHỚ GIẢI RA GIÙM MÌNH NHÉ

Answer 1

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

=> 25 - 30 - x = x - 19

=> -5 - x = x - 19

=> -5 + 19 = x + x

=> 14 = 2x

=> x = 14:2

=> x = 7.

Answer 2

 

Answer 3

25 - 30 -x=x-27-8

x+x=25-30+27-8

x+x=14

x=14:2

x=7

Answer 4

ta có :

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

25 - 30 - x = x - 27 + 8

x + x = 25 - 30 + 27 - 8

2x = 14 

x = 14 : 2 

x = 7