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

Toán Lớp 6: tìm x là số nguyên 5(x+3)-3(3-2)=5^2+18

Toán Lớp 6: tìm x là số nguyên 5(x+3)-3(3-2)=5^2+18

Comments ( 2 )

  1. 5(x+3)-3(x-2)=5^2+18
    <=>5x+15-3x+6-25-18=0
    <=>2x-22=0
    <=>2x=22
    <=>x=11
    Vậy x=11

  2. 5(x+3)-3(x-2)=5^2+18
    <=>5.x+5.3-3.x+3.2=25+18
    <=>5x+15-3x+6-25-18=0
    <=>2x-22=0
    <=>2x=22
    <=>x=11
    Vậy x=11
    $@Tr$ 
     

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

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