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

Toán Lớp 6: 4.(x+5)+2.(x-4)=72+1^300 . 6^2

Toán Lớp 6: 4.(x+5)+2.(x-4)=72+1^300 . 6^2

Comments ( 2 )

  1. 4(x+5)+2(x-4)=72+1^300. 6^2
    ⇔4x+20+2x-8=72+36
    ⇔6x+12=108
    ⇔6x=96
    ⇔x=16

  2. Giải đáp + Lời giải và giải thích chi tiết:
     4  . (x+5)+2  . (x-4)=72+1^300  . 6²
    4  .x+4  .5+2  .x-2  .4=72+1  .36
    4x+20+2x-8=72+36
    (4x+2x)+(20-8)=108
    6x+12=108
    6x=108-12
    6x=96
    x=96:6
    x=16

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