Question

Zadania z załącznika ;D dam naj ;*

zad. 33 i 46.

Answer 1

Zad 33
a)
x=4
y=1
10+(x-y)= 13
10-(x-y)= 7
10-x+y= 7
10+x-y= 13

x= -3
y= 2

10+(x-y)= 5
10-(x-y)= 15
10-x+y= 15
10+x-y= 5

dowolne:
x= 2
y= -3

10+(x-y)= 15
10-(x-y)= 5
10-x+y= 5
10+x-y= 15

b)
10+(x-y)= 10+x-y
10-(x-y)= 10-x+y

zad 46.

2*3x= 6x
4x*5= 20x
2/3x*3= 2x
3/4x*1/3= 1/4x

2x*(-6)= -12x
(-2)*0,5x= -1x
(-1/5x)*10= -2x
(-x)*(-2/3)=2/3x

21x : 3= 7x
6x : (-4)= -1,5x
(-4/5x) : 4/5= -1x
2/3x : 3/2= 4/9x