Explicație pas cu pas:
5x1206-2x1023+1790x3=
=6030-2046+5370
=3984+5370
=9354
6 x 283: 3 + 136 : 8 - 140 x 2:7 =
=1428:3+17-280:7
=476+17-40
=453
2 x 3 620 : 4 - 135: 5 x 2 =
=7240:4-27x2
=1810-54
=1756
615: 3 + 123 x 2:3 - 124 =
=205+246:3-124
=205+82-124
=163