№4 Раскройте скобки и упростите выражение

Решение:

1. \[ -(1-x)-(5,1+x) = -1+x-5,1-x = -6,1 \]
2. \[ -(a-x-3)-(x-a+2) = -a+x+3-x+a-2 = 1 \]
3. \[ (a+3,3a)-(3,3+x) = 4,3a-3,3-x \]
4. \[ (c+4,9)-(5,4+c) = c+4,9-5,4-c = -0,5 \]
5. \[ (n-5,8)-(4,9+n) = n-5,8-4,9-n = -10,7 \]
6. \[ (6,08+a)-(a+9,3) = 6,08+a-a-9,3 = -3,22 \]
7. \[ -(m-3,8)+(4,12+m) = -m+3,8+4,12+m = 7,92 \]
8. \[ -(2,43+x-b)-(2,43+b-x) = -2,43-x+b-2,43-b+x = -4,86 \]
9. \[ -(1,53-x+1)-(x-a-2,53) = -1,53+x-1-x+a+2,53 = a \]
10. \[ -(a-x)-(5,1+x)+a-5,1 = -a+x-5,1-x+a-5,1 = -10,2 \]
11. \[ (b-x)-(a-x)+(a-b) = b-x-a+x+a-b = 0 \]
12. \[ -(a+3,3)-(x-a)-3,3+x = -a-3,3-x+a-3,3+x = -6,6 \]
13. \[ (2,43+1,1)-(b+2,43)+(b-1,1) = 3,53-b-2,43+b-1,1 = 3,53-3,53 = 0 \]