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

Toán Lớp 6: THỰC HIỆN PHÉP TÍNH 356 -6. (234-164) TÌM X 102 +3.(2x–8) = 96

Toán Lớp 6: THỰC HIỆN PHÉP TÍNH
356 -6. (234-164)
TÌM X
102 +3.(2x–8) = 96

Comments ( 2 )

  1. 356-6.(234-164)
    = 356-6.70
    = 356-420
    = -64
    Tìm x :
    102 + 3.(2x-8)=96
               3.(2x-8)= 96-102
               3.(2x-8)= -6
                  2x-8  = -6:3
                  2x-8  = -2
                  2x      = -2+8 
                  2x      = 6
                   x        = 6:2
                   x       =  3
    Chúc bạn học tốt !
     
     

  2. $\text{356 – 6. ( 234 – 164 )}$
    $\text{= 356 – 6. 70}$
    $\text{= 356 – 420}$
    $\text{= -64}$
    $\text{102 + 3. ( 2x – 8 ) = 96}$
    $\text{3. ( 2x – 8 ) = 96 – 102}$
    $\text{3. ( 2x – 8 ) = -6}$
    $\text{2x – 8 = ( -6 ) : 3}$
    $\text{2x – 8 = -2}$
    $\text{2x = ( -2 ) + 8}$
    $\text{2x = 6}$
    $\text{x = 6 : 2}$
    $\text{x = 3}$

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

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