Odpowiedź:
a) 2x+3=5
2x=5-3
2x=2
x=1
b) 2(4x-1)=5
8x-2=5
8x=5+2
8x=7
x=⅞
c) 0,5x+2=1,25
0,5x=1,25-2
0,5x=-0,75 |*2
x=-1,5
d)
[tex] \frac{x}{2} = \frac{3}{8} \\ x = \frac{6}{8} \\ x = \frac{3}{4} [/tex]
e)
[tex]x + \frac{2}{3} = 4 + \frac{x}{5} \\ 15x + 10 = 60 + 3x \\ 15x - 3x = 60 - 10 \\ 12x = 50 \\ x = 4 \frac{2}{12} \\ x = 4 \frac{1}{6} [/tex]
f)
[tex] \frac{1}{2} x + 4 = \frac{5}{6} \\ 3x + 24 = 5 \\ 3x = 5 - 24 \\ 3x = - 19 \\ x = - 6 \frac{1}{3} [/tex]
Liczę na naj ;)
