Question

124 + ( 118 - x ) = 217 

( x - 47 ) - 115 = 0

 315 + ( 146 - x ) = 401 

Answer 1

124 + (118-x)=217

=> 118-x=217-124

=> 118-x=93

=> x=118-93

=> x=25

(x-47)-115=0

=> x-47=0+115

=> x-47=115

=> x=115+47

=> x=162

315+(146-x)=401

=> 146-x=401-315

=> 146-x=86

=> x=146-86

=> x=60

Answer 2

124+(118-x)=217 => 118-x=217-124=> 118-x=93=> x=118-93 => x=25

(x-47)-115=0 => x-47=0+115=>x-47=115=>x=115+47=>x=162

315+(146-x)=401=>146-x=401-315=>146-x=86=>x=146-86=>x=60