Question

Wykonaj działania i zredukuj wyrazy podobne.
1.-(5c - 8) + 9 - 6c - C=
2. 7x - (4x + 2) - 6(3 + 2x) =
3.-5(3x - 7) - 3(4 + 7x) =
4. -8(6n + 9p + t) =
5. (3x - 2y +9)•5 =
6. 7(b + c) - 3(2b + c) =
7. 5(a + 3) + 7b - 3(a + b) =
8. (6x - 5) - (14x + 2) =
9. (4a - 5b - 3) + (-4a + b - 2) =
10. (-12a + 3b - 1):3 =

proszę szybko!!!​

Answer 1

Odpowiedź:

1. -(5c - 8) + 9 - 6c - c= -5c+8+9-6c - c = -12c+17

2. 7x - (4x + 2) - 6(3 + 2x) = 7x-4x-2-18-12x=  -9x -20

3. -5(3x - 7) - 3(4 + 7x) = -15x+35 -12-21x= -36x+23

4. -8(6n + 9p + t) = -48n -72p- 8t

5. (3x - 2y +9)•5 = 15x - 10y +45  

6. 7(b + c) - 3(2b + c) = 7b+7c - 6b -3c= b+4c

7. 5(a + 3) + 7b - 3(a + b) = 5a+15+7b-3a-3b= 2a + 4b+15

8. (6x - 5) - (14x + 2) = 6x-5 -14x-2= -8x-7

9. (4a - 5b - 3) + (-4a + b - 2) = 4a-5b-3-4a+b-2= -5b-3+b-2 = -4b -5

10. (-12a + 3b - 1):3 = -12a+3b-1/:3= -4a+b -1