Решить уравнения: 7y - 7 = 2y + 8; 10 - 3m = 8 - 4m; -8n - 15 = 3n; 72 - a = 7a; 27 - 2x = x; 48 - 6a = -3a; 19 - 5x = 2 - 6x; 11y + 9 = 10y + 4; 15 - 5m = 4m - 3; 18n - 6 = 3n + 24; 2,5 = -0,3x + 2,2; 1,4y - 0,8 = 1,2y; -5z + 7,5 = -2,5z; 1,7 - 1,3a = -0,1 - 0,3a; 1,1y + 8 = 0,3y

1. $7y - 7 = 2y + 8 \implies 5y = 15 \implies y = 3$ 2. $10 - 3m = 8 - 4m \implies m = -2$ 3. $-8n - 15 = 3n \implies -11n = 15 \implies n = -\frac{15}{11} = -1\frac{4}{11}$ 4. $72 - a = 7a \implies 8a = 72 \implies a = 9$ 5. $27 - 2x = x \implies 3x = 27 \implies x = 9$ 6. $48 - 6a = -3a \implies -3a = -48 \implies a = 16$ 7. $19 - 5x = 2 - 6x \implies x = -17$ 8. $11y + 9 = 10y + 4 \implies y = -5$ 9. $15 - 5m = 4m - 3 \implies -9m = -18 \implies m = 2$ 10. $18n - 6 = 3n + 24 \implies 15n = 30 \implies n = 2$ 11. $2,5 = -0,3x + 2,2 \implies 0,3x = -0,3 \implies x = -1$ 12. $1,4y - 0,8 = 1,2y \implies 0,2y = 0,8 \implies y = 4$ 13. $-5z + 7,5 = -2,5z \implies -2,5z = -7,5 \implies z = 3$ 14. $1,7 - 1,3a = -0,1 - 0,3a \implies -1,0a = -1,8 \implies a = 1,8$ 15. $1,1y + 8 = 0,3y \implies 0,8y = -8 \implies y = -10$