Вариант
1. 4х – 21 = -7x – 3
2. 7(3х – 4) – 5 = 9
3. 5х + 4 = 3(6х + 5) + 2
4. 6(2x + 3) – 2(7x — 4) = 23
5. 7х – 5(4х – 5) – 2(6х +7) = 1
6. -11(х – 2) + (2x – 3) = _9x + 19​

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