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

Toán Lớp 8: $\frac{2x + 1}{3xy}$ + $\frac{4x – 1}{3xy}$

Toán Lớp 8: $\frac{2x + 1}{3xy}$ + $\frac{4x – 1}{3xy}$

Comments ( 2 )

  1. $\dfrac{2x + 1}{3xy}$ + $\dfrac{4x – 1}{3xy}$ Đkxđ: x $\neq$ 0; y $\neq$ 0
    = $\dfrac{2x + 1 + 4x – 1}{3xy}$
    = $\dfrac{6x}{3xy}$
    = $\dfrac{2}{y}$
    Chúc bạn học tốt  
     

  2. (2x+1)/(3xy) + (4x-1)/(3xy)
    =(2x+1+4x-1)/(3xy)
    =(6x)/(3xy)
    =2/y

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