Question

Tìm y,biết:

A.y+2,8=4,2+2,28                      B.   5,6:y=4

 

Answer 1

\(a,y+2,8=4,2+2,28\)

\(\Leftrightarrow y+2,8=6,48\)

\(\Leftrightarrow y=6,48-2,8\)

\(\Leftrightarrow y=3,68\)

\(b,5,6:y=4\)

\(\Leftrightarrow y=5,6:4\)

\(\Leftrightarrow y=1,4\)

Answer 2

Ai trả lời nhanh mik hứa sẽ tích đúng

Answer 3

\(y=\left(4,2+2,28\right)-2,8=6,48-2,8=3,68\)

\(y=\dfrac{5,6}{4}=\dfrac{56}{40}=\dfrac{7}{5}\)