Question

tính cách thuuaanj tiện nhất

5/7 x 4 + 5/7 + 5/7 x 2

Answer 1

= \(\dfrac{5}{7}x\left(4+2+1\right)=\dfrac{5}{7}x7=5\)

Answer 2

\(^{\dfrac{5}{7}\times4+\dfrac{5}{7}+\dfrac{5}{7}\times2=\dfrac{5}{7}\times\left(4+2+1\right)=\dfrac{5}{7}\times7=\dfrac{35}{7}=5}\)