b)
[tex]5 - \frac{x}{3} = 8 - 1\frac{1}{3}x \\5-\frac{x}{3}=8-\frac{4}{3}x\\15 - x = 24 -4x\\-x + 4x = 24-15\\3x = 9 \\x = 3[/tex]
c)
[tex]\frac{1-3x}{5}=-1,4+x\\\frac{1-3x}{5}=-\frac{7}{5}+x \\1-3x=-7+5x\\-3x-5x=-7-1\\-8x=-8\\x=1[/tex]
d)
[tex]\frac{1}{3}x-8=\frac{x-18}{2}\\2x-48=3(x-18)\\2x-48=3x-54\\2x-3x=-54+48\\-x=-6\\x=6[/tex]
Liczę na naj :D
