1) x – 457 = 2942 x = 2942 + 457 x = 3399 | 2) 2547 + x = 2019 x = 2619 – 2547 x = 72 |
y + 3189 = 7213 y + 3189 = 7213 y = 7213 – 3189 y = 4024 | z – 379 = 492 z = 492 + 379 z = 871 |
4567 – z = 2966 z = 4567 – 2966 z = 1601 x + z = 3399 + 1601 = 5000 | 5412 – y = 4893 y = 5412 – 4893 y = 519 x + z > 1395; x – y < 12 |