Question

Question 1.Find x :

a, 4 . 12 . x = 1992

b, 28 . 3 . x = 2007

Question 2. What is this song : https://www.youtube.com/watch?v=XsX3ATc3FbA 's name?

 

Answer 1

\(a,\)\(4.12.x=1992\)

\(\Rightarrow48.x=1992\)

\(\Rightarrow x=\frac{1992}{48}\)

\(\Rightarrow x=\frac{83}{2}\)

Answer 2

\(4\cdot12\cdot\times=1992\)

\(4\cdot\times=1992:12\)

\(4\cdot\times=166\)

\(\times=41\frac{1}{2}\)

Answer 3

\(b,\)\(28.3.x=2007\)

\(\Rightarrow84.x=2007\)

\(\Rightarrow x=\frac{2007}{84}\)

\(\Rightarrow x=\frac{669}{28}\)

Answer 4

\(28\cdot\times=2007:3=669\)

\(\times=669:28\)

\(\times=23\frac{25}{28}\)