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

Toán Lớp 6: a) × +40=25 b) 2×-3=-5 c) 541+(218-×)=735 d) 150-2(×-5)=30

Toán Lớp 6: a) × +40=25
b) 2×-3=-5
c) 541+(218-×)=735
d) 150-2(×-5)=30

Comments ( 2 )

  1. a) x + 40 = 25
    x = 25 – 40
    x = – 15
    Vậy x = – 15
    b) 2x – 3 = – 5
    2x = – 5 + 3
    2x = – 2
    x = – 2 : 2
    x = – 1
    Vậy x = – 1
    c) 541 + ( 218 – x ) = 735
    541 + 218 – x = 735
    759 – x = 735
    x = 759 – 735
    x = 24
    Vậy x = 24
    d) 150 – 2 ( x – 5 ) = 30
    – 2 ( x – 5 ) = 30 – 150
    – 2 ( x – 5 ) = – 120
    x – 5 = ( – 120 ) : ( – 2 )
    x – 5 = 60
    x = 60 + 5
    x = 65
    x = 65
    Vậy x = 65

  2. Giải đáp+Lời giải và giải thích chi tiết:
    a)
    x+40=25
    x=25-40
    x=-15
     Vậy x=-15
    b)
    2x-3=-5
    2x=-5+3
    2x=-2
    x=-2:2
    x=-1
     Vậy x=-1
    c)
    541+(218-x)=735
    218-x=735-541
    218-x=194
    -x=194-218
    -x=-24
    x=24
     Vậy x=24
    d)
    150-2(x-5)=30
    -2(x-5)=30-150
    -2(x-5)=-120
    x-5=-120:(-2)
    x-5=60
    x=60+5
    x=65
     Vậy x=65
    #LinhSad

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

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