75-x=15
x=75-15
x=60
x+9=54
x=54-9
x=45
x-38=42
x=38+42
x=80
56-x=19
x= 56-19
x=37
25+x=73
x=73-25
x=48
x-14=27
x=27+14
x=41
75-x=15
x=75-15
x=60
x+9=54
x=54-9
x=45
x-38=42
x=38+42
x=80
56-x=19
x= 56-19
x=37
25+x=73
x=73-25
x=48
x-14=27
x=27+14
x=41