Question

1.Efectuati : 269+12*[60+225:15+(987-168):3]

2.Aflati valoarea necunoscutei x:
x :3+(323-74*4)=557-484:4

Answer 1

269+12*[60+225:15+(987-168):3]=
269+12*(60+15+819:3)=
269+12*(75+273)=
269+12*348=
269+4 176 =
4 445


x :3+(323-74*4)=557-484:4
x :3+(323-296)=557-121
x :3+27=436
x :3=436-27
x :3=409
x=409×3
x=1 227