Question

tính giá trị biểu thức

d. 9/20 + 3/5 x 1/4=????

mọi người giúp em nha

Answer 1

9/20 + 3/20 = 12/20 = 3/5

Answer 2

\(\dfrac{9}{20}+\left(\dfrac{3}{5}\times\dfrac{1}{4}\right)=\dfrac{9}{20}+\dfrac{3}{20}=\dfrac{12}{20}=\dfrac{3}{5}\)

Answer 3

3/5

Answer 4

\(\dfrac{9}{20}+\dfrac{3}{5}x\dfrac{1}{4}=\dfrac{9}{20}+\dfrac{3}{20}=\dfrac{12}{20}=\dfrac{3}{5}\)

Answer 5

= 3/5