Question

tìm a biêt: a x 5 : 6 =25

Answer 1

\(a\times5:6=25\)

\(a\times5=25\times6\)

\(a\times5=150\)

\(a=150:5\)

\(a=30\)

Answer 2

\(a\times5:6=25\\ a\times\dfrac{5}{6}=25\\ a=25:\dfrac{5}{6}\\ a=25\times\dfrac{6}{5}\\ a=30\)

Answer 3

a x 5 : 6 = 25

a x 5      = 25 x 6

a x 5      = 150

a            =150 : 5

a            = 30

Answer 4

\(a\times5:6=25\\ \Rightarrow a\times5=25\times6\\ \Rightarrow a\times5=150\\ \Rightarrow a=150:5\\ \Rightarrow a=30\)