Question

1.tìm x

140-100:x =120

300-x;5=273 

Answer 1

\(140-100:x=120\\ \Rightarrow100:x=140-120=20\\ \Rightarrow x=100:20=5\)

\(300-x:5=273\\ \Rightarrow x:5=300-273=27\\ \Rightarrow x=27\times5=135\)

Answer 2

140 - 100 : x = 120

100 : x = 140 - 120

100 : x = 20

X = 100 : 20

X = 5