1) - 43 × (5х + 17) = 129
5х + 17 = - 3
5х = - 3 - 17
5х = - 20
х = - 4
2)81 × (97 - 10х) = - 243
97 - 10х = - 3
- 10х = - 3 - 97
- 10х = - 100
х = 10
1) - 43 × (5х + 17) = 129
5х + 17 = - 3
5х = - 3 - 17
5х = - 20
х = - 4
2)81 × (97 - 10х) = - 243
97 - 10х = - 3
- 10х = - 3 - 97
- 10х = - 100
х = 10