fork download
  1. FS="=|x"{for(;$2%=$1-=$2%$1;);$0=$3%$1?"no":"yes"}a++
Success #stdin #stdout 0s 5284KB
stdin
5
2x+3y=5
4x+8y=25
9x+7y=4
8x+4y=4
stdout
yes
no
yes
yes