56 + 26 - x + 1 = 6
82 - x = 6 - 1
82 - x = 5
x = 82 - 5
x = 77
56+26-x+1=6
56+26-x =6-1
56+26-x=5
82-x=5
x=82-5
x=77
k nha ! Chúc bạn học tốt!:)
truong nguyen hai yen lm sai rùi
26-x+1= 6-56=-50
26-x. =-50-1
-x. =-51-26
-x = -77
x = 77
56 + 26 - x + 1 = 6
82 - x = 6 - 1
=> 82 - x = 5
=> x = 82 - 5
=> x = 77
56 + 26 - x +1 =6
82 - x =6 - 1
82 - x =5
x =82 - 5
x =77
56+26-x+1=6
82 -x+1=6
82 -x =6-1
82 -x = 5
x =82-5
x =77
K MÌNH NHAAAAAA