Question

Zad.1
(-x)*(-2/3)
21x/3
6x:(-4)
2/3x:3/2

zad.6
2(x+3)
5(3x-1)
(-4)*(2a-b)
-2(-4b+3)
(a+b)*(-4)
(4-5x+6y)*3
-3(3x-2)
-1(3x-y+2)

zad.7
(6x-2y):2
(-3a-1,5):(-3)
(2,4a-1,6b):0,8
(4u-6v):(-1/2)

Answer 1

Zad.1
(-x)*(-2/3)=2/3x
21x/3=7x
6x:(-4)=-3/2x
2/3x:3/2=2/3x*2/3=4/6x=2/3x

zad.6
2(x+3)=2x+6
5(3x-1)=15x-5
(-4)*(2a-b)=-8a+4b
-2(-4b+3)=8b-6
(a+b)*(-4)=-4a-4b
(4-5x+6y)*3=12-15x+18y
-3(3x-2)=-9x+6
-1(3x-y+2)=-3x+y-2

zad.7
(6x-2y):2=3x-y
(-3a-1,5):(-3)=a+0,5
(2,4a-1,6b):0,8=3a-2
(4u-6v):(-1/2)=-8u+12v