Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: `b)` `-(-299)+(-219)+(-401)+12`

Toán Lớp 6: b) -(-299)+(-219)+(-401)+12

Comments ( 2 )

  1. Giải đáp:
    =>B=299 -219 -401+12
    =>B=80-401+12
    =>B=(80+12)-401
    =>B=92-401
    =>B=-309
     
     

  2. Giải đáp:
    -(-299) + (-299) + (-401) + 12
    = 299 -299- 401 + 12
    = ( 299 – 299) – 401 + 12
    = 0 -401 +12
    = -401 +12
    = -(401 -12)
    = -389
    Áp dụng:
    1. -(- A) = + A= A
    2. -A + B = – ( A – B)

Leave a reply

222-9+11+12:2*14+14 = ? ( )

About Thảo