Odpowiedź :
Odpowiedź:
d) [tex]\frac{x}{5}[/tex]-3=x+[tex]\frac{1}{5}[/tex] |·5
x-15=5x+1
-4x=16 |÷(-4)
x=-4
e) [tex]\frac{5}{6}[/tex](x-1)=4 |·6
5(x-1)=24
5x-5=24
5x=29 ÷5
x=[tex]\frac{29}{5}[/tex]
x=5[tex]\frac{4}{5}[/tex]
f) -[tex]\frac{1}{2}[/tex](-x-6)=-x |·2
-1(-x-6)=-2x
x+6=-2x
3x=-6 |÷3
x=-3
Odpowiedź:
a)
1/2x - 4 = x - 6
1/2x - x = 4 - 6
-1/2x = -2 | *(-2)
x = 4
b) nie jestem pewna tego
x - 5 = 1/3x + 1
x - 1/3x = 5 + 1
2/3x = 6 | *3
2x = 18
c)
x/4 - 1/4 = 2
x/4 = 1/4 + 2 | *4
x = 1 + 8
x = 9
d)
x/5 - 3 = x + 1/5
x/5 - x = 3 + 1/5 | *5
x - 5x = 15 + 1
-4x = 16 | :-4
x = -4
e)
5/6 (x - 1) = 4
5/6x - 5/6 = 4
5/6x = 5/6 + 4
5/6x = 4 5/6
5/6x = 29/6 | :5/6
x = 29/5 = 5 4/5
f)
-1/2 (-x - 6) = -x
1/2x + 3 = x
1/2x - x = -3
-1/2x = -3 | *(-2)
x = 6
Proszę bardzo ;)