Рскройте сскобки и упростите: 1) n+(n+3)+(n+6)=... 2) (n-10)+(n-1)+(n+1)=... 3) (n-10)+(n-5)+n+(n+5)=... 4)

1) n + n + 3 + n + 6 = 3 * n + 9;

2) n - 10 + n - 1 + n + 1 = 3 * n - 10;

3) n - 10 + n - 5 + n + n + 5 = 4 * n - 10;

4) (p - 5) - (p + 5) = p - 5 - p - 5 = -10;

5) (p + 5) - (p - 5) = p + 5 - p + 5 = 10;

6) p - (p - 5) + (p + 5) = p - p + 5 + p + 5 = p + 10;

7) 4 * (2 * a - 1/4) = 4 * 2 * a - 4 * 1/4 = 8 * a - 4/4 = 8 * a - 1;

8) 0,5 * (6 * x + 2) = 0,5 * 6 * x + 0,5 * 2 = 3 * x + 1;

9) -3 * (3 * c + 1) = -3 * 3 * c + (-3) * 1 = -9 * c - 3;

10) -10 * (0,1 * b - 0,5) = -10 * 0,1 * b - (-10 )* 0,5 = -1 * b + 5 = 5 - b;

11) by + by + by + 3 = 3 * by + 3 = 3 * (by + 1);

12) 2 * x + 3 * y - 4 * x - 4 * y + 1 = 1 - х - у;

13) 7 * a - 4 - a + 5 + 2 * a - 1 = 8 * а.