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

Toán Lớp 8: a)2x+4/10 + 2-x/15 b) 3x/10+2x-1/15+2-x/20 Giúp mik vs ạ

Toán Lớp 8: a)2x+4/10 + 2-x/15
b) 3x/10+2x-1/15+2-x/20
Giúp mik vs ạ

Comments ( 2 )

  1. Vote hay nhất ,5sao, tym cho mik❤
    toan-lop-8-a-2-4-10-2-15-b-3-10-2-1-15-2-20-giup-mik-vs-a

  2. Giải đáp:
     
    Lời giải và giải thích chi tiết:a) 2x + 4/10 + 2 – x/15
    MTC: 30
    = 60x/30+12/30+60/30 – 2x/30
    =60x+12+60-2x
    =58x+72
    b) 3x/10 +2x-1/15+2-x/20
    MTC: 60
    =18x/60+120x/60-4/60+120-3x/60
    =18x+120x-4+120-3x
    =135x-116
     

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

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