Question

tìm x∈N biết

56-( x - 14 )=22

 

172-(137-x )=93

Answer 1

56 - ( x - 14 ) = 22

x - 14 = 56 - 22

x - 14 = 34

x = 34 + 14

x = 48

172 - ( 137 - x ) = 93

137 - x = 172 - 93

137 - x = 79

x = 137 - 79

x = 58

Answer 2

1/ 56 - (x - 14) = 22  => x - 14 = 56 - 22  => x - 14 = 34  => x = 34 + 14  => x = 48 

2/ 172 - (137 - x) = 93   => 137 - x = 172 - 93   => 137 - x = 79   => x = 137 - 79  => x = 58