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

Toán Lớp 7: A= 1/3-3/4-(-3/5)+ 1/15-2/9-1/36 B= 2/3+1/3 X -6/10

Toán Lớp 7: A= 1/3-3/4-(-3/5)+ 1/15-2/9-1/36
B= 2/3+1/3 X -6/10

Comments ( 2 )

  1. \text {Mon}
    A=1/3-3/4-(-3/5)+1/15-2/9-1/36
    A=1/3-3/4+3/5+1/15-2/9-1/36
    A=(1/3+3/5+1/15)-(3/4+2/9+1/36)
    A=(5/15+9/15+1/15)-(27/36+8/36+1/36)
    A=15/15-36/36
    A=1-1
    A=0
    B=2/3 + 1/3 xx $\dfrac{-6}{10}$ 
    B=2/3+ $\dfrac{-1}{5}$ 
    B=10/15 + $\dfrac{-3}{15}$ 
    B=7/15

  2. Giải đáp+Lời giải và giải thích chi tiết:
    A= 1/3 – 3/4 – ( – 3/5)+ 1/15 – 2/9 – 1/36 
    A = 60/180 – 135/180 + 108/180 + 12/180 – 40/180 – 5/180
    A = {60 – 135 + 108 + 12 – 40 – 5}/180
    A = 0/180
    A = 0
    B= 2/3 + 1/3 × (-6/10)
    B= 2/3 + {1×(-6)}/{3×10}
    B= 2/3 + (-1/5)
    B= 10/15 + (-3/15)
    B= 7/15

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