Question

Macie w załączniku. Dziękuje, już teraz jestem bardzo wdzięczna, to PILNE!!

Answer 1

3a) 4c-(3c+2)-10c=4c-3c-2-10c=-9c-2

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

c) 9y+(8-3y)+16=9y+8-3y+16=6y24

d) 5x-(2-4x)+8x-7=5x-2+4x+8x-7=17x-9

e)-(-5c-8)+6-9c-c=5c+8+6-9c-c=-5c+14

f)-4(3x-6)-3(2+7x)=-12x+24-6-21x=-33x+18

g)5(3z-7)-9(-8z-6)=15z-35+72z+54=87z+19

h) -3(5x-4)+8(-3x+2)=-15x+12-24x+16=-39x+28

i) 7x-3(5x+2)-6(7+2x)=7x-15x-6-42-12x=-20x-48

j) -5(3y-7)-2(6+4y)+3y=-15y+35-12-8y+3y=-20y+23

 

4

a) 5a+4(a-1)=5a+4a-4=9a-4

b) 5a+3(a-2)+5b=5a+3a-6+5b=8a-6+5b

c) 4(2b+1/4)-6b=8b+1-6b=2b+1

d) 2a+0,5(a-2)+5b=2a+0,5a-1+5b=2,5a-1+5b

e) 3x-0,2(1-2x)=3x-0,2+0,4x=3,4x-0,2

f) -1/3(a+3b)-2a=-1/3a-b-2a=-7/3a-b

 

Answer 2

3.
a) =4c-3c-2-10c=
=9c-2

b) =7x-8-5x-6=
=2x-14

c) =9y+8-3y+16=
= 6x+24

d) =5x-2+4x+8x-7
= 17x-9

e) =5c+8+6-9c-c
=-5c+14

f) =-12x+24-6-21x=
=-33x+18

g) = 15z-35+72z+54=
= 87z+19

h)= -15x+12-24x+16=
= -39x+28

i) = 7x-15x-6-42-12x=
= -20x -48

j)= -15y+35-12-8y+3y=
=  -20+23


4.
a) = 5a+4a-a=
= 8a

b) =5a+3a-6+5b=
= 13a -6

c) = 8b +1-6b=
= 2b+1

d)=2a+0,5a-1+5b=
= 7,5a-1

e)=3x -0,2+0,4x=
= 3,4x-0,2

f)=-1/3a-b-2a=
=-2  1/3a-b