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![](https://rs.olm.vn/images/avt/0.png?1311)
a) x – 32 = − 5 − 17 ⇔ x – 32 = − 32 ⇔ x = − 32 + 32 ⇔ x = 0.
b) 16 – x = 21 – − 8 ⇔ 16 – x = 21 + 8 ⇔ 16 − x = 30 ⇔ − x = 30 − 16 ⇔ − x = 14 ⇔ x = − 14.
c) 106 − x = − 58 – 8 ⇔ 106 − x = − 66 ⇔ − x = − 66 − 106 ⇔ − x = − 172 ⇔ x = 172.
![](https://rs.olm.vn/images/avt/0.png?1311)
16 – x = 21 – − 8 16 – x = 21 + 8 16 − x = 30 − x = 30 − 16 − x = 14 x = − 14.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
x-5 | -16 | -8 | -4 | -2 | -1 | 1 | 2 | 4 | 8 | 16 |
x+y | -1 | -2 | -4 | -8 | -16 | 16 | 8 | 4 | 2 | 1 |
x | -11 | -3 | 1 | 3 | 4 | 6 | 7 | 9 | 13 | 21 |
y | 10 | 1 | -5 | -11 | -20 | 10 | 1 | -5 | -11 | -20 |
Vậy (x;y) = (-11;10) ; (-3;1) ; (1;-5) ; (3;-11) ; (4;-20) ; (6;10) ; (7;1) ; (9;-5) ; (13;-11) ; (21;-20)
![](https://rs.olm.vn/images/avt/0.png?1311)
x = 13