b ) - 25 + ( - 16 + x ) = 0
( - 16 + x ) = 0 - ( - 25 )
- 16 + x = 25
x = 25 - ( - 16 )
x = 41
Vậy x = 41
c ) - 51 - ( 17 - x ) = 0
17 - x = - 51 - 0
17 - x = - 51
x = 17 - ( - 51 )
x = 68
Vậy x = 68
b. -25+(-16+x)=0
-16+x=0-(-25)
-16+x=25
=>x=25-(-16)
x=41
c,-51-(17-x)=0
-(17-x)=0+(-51)
-(17-x)=-51
Áp dụng quy tắc bỏ ngoặc ta có:
17+x=51
=>x=51-17
x=34
a, - 25 + ( - 16 + x ) = 0
x = 0 - ( -16 )
x = 16
x = 16 - ( -25)
x = 41
Vậy x = 41
b,- 51- ( 17 - x ) = 0
x = 0- 17
x = - 17
x = -17 - 51
x = -68
vậy x = - 68
b ) - 25 + ( - 16 + x ) = 0
( - 16 + x ) = 0 - ( - 25 )
- 16 + x = 25
x = 25 - ( - 16 )
x = 41
Vậy x = 41
c ) - 51 - ( 17 - x ) = 0
17 - x = - 51 - 0
17 - x = - 51
x = 17 - ( - 51 )
x = 68
Vậy x = 68
P/s tham khảo nha
c ) -51 - (17 - x) = 0
=> 17 - x = - 51 - 0
=> 17 - x = - 51
=> x = 17 - (- 51)
=> x = 68
vậy_____
-2x-(x-17)=34-(-x+25)