(-11)×(-2/5)+11×(-13/5)+(-11)×(-1/5)简便运算

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(-11)×(-2/5)+11×(-13/5)+(-11)×(-1/5)简便运算

(-11)×(-2/5)+11×(-13/5)+(-11)×(-1/5)简便运算
(-11)×(-2/5)+11×(-13/5)+(-11)×(-1/5)简便运算

(-11)×(-2/5)+11×(-13/5)+(-11)×(-1/5)简便运算
(-11)×(-2/5)+11×(-13/5)+(-11)×(-1/5)
=(-11)×(-2/5)+(-11)×13/5 +(-11)×(-1/5)
=(-11)×[(-2/5)+13/5+(-1/5)]
=(-11)×2
=-22