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

Toán Lớp 6: So sánh A=$\frac{5.(11.13-22.26)}{22.26-44.52}$ và B=$\frac{138^2-690}{137^2-548}$ Help meeeeeeeeeeeeeeeeeeeee

Toán Lớp 6: So sánh A=$\frac{5.(11.13-22.26)}{22.26-44.52}$ và B=$\frac{138^2-690}{137^2-548}$
Help meeeeeeeeeeeeeeeeeeeee

Comments ( 1 )

  1. Giải đáp:
    A =5.11.13.(1-2)/ 22.26.(1-2)
       = 5.11.13/ 2.2.11.13
       = 5/4
    B =138.(138-5)/ 137.(137-4)
       = 138. 133/ 137.133
       = 138/ 133
    Mà 5/4> 138/133
    => A> B

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