Решение уравнений:

1. а) $$x + 47 = 75$$ $$x = 75 - 47$$ $$\mathbf{x = 28}$$
2. б) $$146 + y = 232$$ $$y = 232 - 146$$ $$\mathbf{y = 86}$$
3. в) $$74 - z = 12$$ $$z = 74 - 12$$ $$\mathbf{z = 62}$$
4. г) $$m - 97 = 232$$ $$m = 232 + 97$$ $$\mathbf{m = 329}$$