A) 6(x+5)-5x=25

6x+30-5x=25

x+30=25

x=25-30

x= -5

B) 5(x-3)=4(x+4)

5x-15=4x+16

5x-4x=15+16

x=31

C) 3(3-x)+9=2(x-4)+6

9-3x+9=2x-8+6

18-3x=2x-2

18+2=2x+3x

20=5x

20/5=x

4=x

D) -3(x-1)+4=6(x-1)-5

-3x+3+4=6x-6-5

-3x+7=6x-11

7+11=6x+3x

18=9x

18/9=x

2=x

E) 3(4+x)=(x+4)5+1-3x

12-3x=5x+20+1-3x

12-3x=2x+21

-3x-2x=21-12

-5x=9

x=9/-5

x= -1.8

F) 7x-(2x-1)4+7=(-2)(1-2x)3

7x+4(2x-1)+7=(-2)(3-6x)

7x+8x-4+7=-6+12x

15x+3=-6+12x

15x-12x=-6-3

3x=-9

x=-9/3

x=-3

A) 6x+30-5x=25

x = -5

B) 5x-15=4x+16

x = 31

C) 9 -3x +9 = 2x-8+6

-5x = -2

x = 2/5

D) -3x+3+4=6x -6 -5

-9x=-18

x = 2

E) 12+3x=5x+20+1-3x

x = 9

F) 7x-8x+4+7=-6+12x

-13x = -17

x = 17/13

:)