a,x+34=75
x =75-34
x =41
b,x+67=98
x =98-67
x =31
c,x-34=98
x =98+34
x =132
x+34=75
x=75-34
x=41
x+67=98
x=98-67 x=31
x-34=98
x=98+34
x=132
Choose the excessive word in the sentence below.