0 0 – – 3, – 4+ 6 | –3| = 3 | +5| = 5 | –4| = 4 | +6| = 6 | –3,5| = 3,5| +10| = 10 | 0 | =0

0 – – – | –3| = 3 | +3| = 3 | –4| = 4| +4| = 4 | –8| = 8 | +8| = 8 | 0 | = 0

0 – аа | – а | = а| а | = а | – а | = | а |