Răspuns :
X:7+4×8-120=80
X:7+32-120=80
X:7+32=80+120
X:7+32=200
X:7=200-32
X:7=168
X=168×7
X=1176
V 1176:7+4×8-120=
168+32-120=
200-120=80
X:7+32-120=80
X:7+32=80+120
X:7+32=200
X:7=200-32
X:7=168
X=168×7
X=1176
V 1176:7+4×8-120=
168+32-120=
200-120=80