Odpowiedź:
a) 1/2x -4 = x -6 | +4
1/2x = x - 2 | -x
-1/2x = -2 | ·(-2)
x=4
4
b)
x- 5 = 1/3x +1 |+5
x= 1/3x + 6 |+1/3x
2/3x = 6 | · 3/2
x= 6 · 3/2
x= 3·3
x=9
9
c)
x/4 - 1/4 = 2 |·4
x-1=8 |+1
x=9
9
d)
x/5 - 3 = x + 1/5 |·5
x-15 = 5x + 1 |+15
x=5x+16 |-5x
-4x = 16 |:(-4)
x= - 4
-4
e)
5/6(x-1)=4 |·6
5(x-1)=24
5x-5=24 |+5
5x = 29 |:29
x = 29/5
x= 5 4/5
5 4/5
f)
-1/2(-x-6)= -x |·(-2)
-x-6=2x |+x
-6 = 3x |:3
x = -2
-2
myślę że wszystko dobrze pozdrawiam licze na naj. :)
