Răspuns :
x-48=38+29
x-48=67
x=67+48
x=115
46-x=91-73
46-x=18
x=46-18
x=28
45+27=x+39
x+39=72
x=72-39
x=33
62-27=x-45
x-45=35
x=35+45
x=80
x-48=67
x=67+48
x=115
46-x=91-73
46-x=18
x=46-18
x=28
45+27=x+39
x+39=72
x=72-39
x=33
62-27=x-45
x-45=35
x=35+45
x=80