Question

rút gọn phân số: \(\dfrac{78}{45}\) 

tính: \(\dfrac{13}{17}\) + \(\dfrac{31}{34}\) = 

Answer 1

Rút gọn:`78/45=[78:3]/[45:3]=26/15`

Tính:`13/17+31/34=26/34+31/34=57/34`

Answer 2

Rút gọn phân số: \(\dfrac{78}{45}=\dfrac{78:3}{45:3}=\dfrac{26}{15}\)

Tính: \(\dfrac{13}{17}+\dfrac{31}{34}=\dfrac{26}{34}+\dfrac{31}{34}=\dfrac{57}{34}\)

Answer 3

\(=\)\(\dfrac{78:3}{45:3}=\dfrac{26}{15}\)

\(=\dfrac{26}{34}+\dfrac{31}{34}=\dfrac{57}{34}\)