Question

tính bằng hai cách : \(\left(\frac{6}{11}+\frac{5}{11}\right)\times3\) 

Answer 1

Cách 1 :\(\left(\frac{6}{11}+\frac{5}{11}\right)\times3=\frac{11}{11}\times3=1\times3=3\)

Cách 2 : \(\left(\frac{6}{11}+\frac{5}{11}\right)\times3=\left(\frac{6}{11}\times3\right)+\left(\frac{5}{11}\times3\right)\)

                                              =\(\frac{18}{11}+\frac{15}{11}=\frac{33}{11}=3\)

Answer 2

cách 1:

(6/11+5/11)*3=1*3=3

cách 2:

(6/11+5/11)*3=6/11*3+5/11*3=18/11+15/11=33/11=3

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