Răspuns :
40+3x {4+3x[50+3x(200:4-98:2)]}=529
40+3x{4+3x[50+3x(50-49)]}=529
40+3x[4+3x(50+3x1)]=529
40+3x[4+3x(50+3)=529
40+3x(4+3x53)=529
40+3x(4+159)=529
40+3x163=529
40+489=529
40+3x{4+3x[50+3x(50-49)]}=529
40+3x[4+3x(50+3x1)]=529
40+3x[4+3x(50+3)=529
40+3x(4+3x53)=529
40+3x(4+159)=529
40+3x163=529
40+489=529