Question

b ) X + 18,7 = 50,5 : 2,5 

 

c ) X x 1,25 = 6 x 2,5 

 

Answer 1

\(a,x+18,7=50,5:2,5\\ \Rightarrow x+18,7=20,2\\ \Rightarrow x=20,2-18,7\\ \Rightarrow x=1,5\\ c,x\times1,25=6\times2,5\\ \Rightarrow x\times1,25=15\\ \Rightarrow x=15:1,25\\ \Rightarrow x=12\)