Question

Algebra :) nie umiem nic -.- Pls o pomoc -.-

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1. 9x+(-5x)

2. -17p+12p-11p

3. (3f-3)- (-f-2)+1

4. 3(3-5y)+3(y-2)-3+y

5. 5(2n-w)-(w-3n+2)+(6w+2)

6. (3-6r+f)+2(-1+2r+f)-(1-2r)

7. 2(3x-2y)+(-3x+2y)+(2y+9x)

8. (7y-8x+2)-2(1+5y-4x)

9. -(4x-5)+7x-(4x-4)-9

10. -7y+12y

11. (6a+7) - (-15a-1)-8

12. 2,5n-(-3n+2-b)+(-11n-b)+(0,5n+2)

13. (3f-2g) + (2g+4f)

14. - [(12p+7)-3(-1-p)-10]

15. (3b-2a+4)+(4a-3b-2)-2

16.8(5-n)-19+(17n-21)

17. -5p+3p-2p-9p+7p-3p

18. 2(5a-4n+3p)-(6p-8n+14a)

Answer 1

1. 9x+(-5x)=9x-5x=4x

2. -17p+12p-11p=-28p+12p=-16p

3. (3f-3)- (-f-2)+1=3f-3+f+2+1=4f

4. 3(3-5y)+3(y-2)-3+y=9-15y+3y-6-3+y=-11y

5. 5(2n-w)-(w-3n+2)+(6w+2)=10n-w-w+3n-2+6w+2=13n+4w

6. (3-6r+f)+2(-1+2r+f)-(1-2r)=3-6r+f-2+4r+f-1+2r=2f

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

8. (7y-8x+2)-2(1+5y-4x)=7y-8x+2-2-10y+8x=3y

9. -(4x-5)+7x-(4x-4)-9=-4x+5+7x-4x+4-9=x

10. -7y+12y=5y

11. (6a+7) - (-15a-1)-8=6a+7+15a+1-8=21a

12. 2,5n-(-3n+2-b)+(-11n-b)+(0,5n+2)=2,5+3n-2+b-11n-b+0,5n+2=-5n-b

13. (3f-2g) + (2g+4f)=7f

14. - [(12p+7)-3(-1-p)-10]=-[12p+7+3+p-10]=-12p-7-3-p+10=-13p

15. (3b-2a+4)+(4a-3b-2)-2=3b-2a+4-8a+6b+4=9b-10a+8

16.8(5-n)-19+(17n-21)=40-8n-19+17n-21=9n

17. -5p+3p-2p-9p+7p-3p=-p

18. 2(5a-4n+3p)-(6p-8n+14a)=10a-8n+3p-6p+8n-14a=-4a-3p