Question

Tính bằng 2 cách:

\(\frac{17}{25}x\frac{13}{19}+\frac{17}{25}x\frac{6}{19}\)

Answer 1

C1)  17/25.13/19+17/25.6/19                    C2)  17/25.13/19+17/25.6/19

       =17/25.(13/19+6/19)                                =221/475+102/475

       =17/25.1=17/25                                        =17/25

Học tốt nha

                                                                                                                                                                               

      

Answer 2

\(C1:\)

\(\frac{17}{25}x\frac{13}{19}+\frac{17}{25}x\frac{6}{19}\)

\(=\frac{17}{25}x\left(\frac{13}{19}+\frac{6}{19}\right)\)

\(=\frac{17}{25}x1\)

\(=\frac{17}{25}\)

\(C2:\)

\(\frac{17}{25}x\frac{13}{19}+\frac{17}{25}x\frac{6}{19}\)

\(=\frac{221}{475}+\frac{102}{475}\)

\(=\frac{323}{475}=\frac{17}{25}\)

Answer 3

17/25

Answer 4

\(\frac{17}{25}\cdot\frac{13}{19}+\frac{17}{25}\cdot\frac{6}{19}\)

\(=\frac{17}{25}\cdot\left(\frac{13}{19}+\frac{6}{19}\right)\)

\(=\frac{17}{25}\cdot1\)

\(=\frac{17}{25}\)

Answer 5

\(C1: \frac{17}{25}x\left(\frac{13}{19}+\frac{6}{19}\right)=\frac{17}{25}\)

\(C2:\frac{17}{19}x\left(\frac{13}{25}+\frac{6}{25}\right)=\frac{17}{25}\)