Question

Zadanie 1.

a.6(x-4)-4=

b.2(x+1)-3(x-1)=

c.-3(y-2)+4(y+2)=

d.5(x-y-1)-4(x+2)=

e.2(3a+b)-2(a-b)=

f.1/2(4x-4)-2x=

g.x(x-1)-3(x2 -x)=

h.5a(a-3)-3a(a-5)=

i.3x(x+1/3y)-2y(1/2x-1/2)=

Zadanie 2

a. 3x-6

------- -5 =

3

b. 3a-9b 2a-4b

-------- - ------- =

3 2

c. 2x+6 - 6x-9

------ ----- =

2 3

d. 4 razy x-7 x-1

----- + 9 razy ----- =

2 3

Answer 1

a.6(x-4)-4=6x-24-4=6x-28

b.2(x+1)-3(x-1)=2x+2-3x+3=-x+5

c.-3(y-2)+4(y+2)=-3y+6+4y+8=-y+14

d.5(x-y-1)-4(x+2)=5x-5y-5-4x-8=x-5y-13

e.2(3a+b)-2(a-b)=6a+2b-2a+2b=4a+4b

f.1/2(4x-4)-2x=2x-2-2x=-2

g.x(x-1)-3(x2 -x)=x^2-x-3x^2+3x=-2x^2+2x

h.5a(a-3)-3a(a-5)=5a^2-15a-3a^2+15a=-2a^2

i.3x(x+1/3y)-2y(1/2x-1/2)=3x^2+y-xy+y=3x^2-xy+2y

Answer 2

a) 6-24-4=6x-28

b)2x+2-3x+3=-1x+5

c)-3y+6+4y+8=1y+14

d) 5x-5y-5-4x-8=1x-5y-13

e)6a+2b-2a+2b=4a+4b

f)2x-2-2x=-2

g)x do drugiej -1-3x do drugiej +3x = -2x do drugiej +2+2x

h)5a do drugiej-15a -3a do drugiej+15=-2a do drugiej

i)3x do drugiej+1xy-1xy+1y=3x du drugiej+1y

zad 2

a)

1x-2-5=1x-7

b)

1a-3b-1a-2b=-5b

c)

1x+3-2x-3=-1x

d)

2x-14+3x-3=5x-17