Odpowiedź :
a)
[tex]4x - 3 = 3x + 5 \\ x = 8[/tex]
b)
[tex]5x + 2 = - 3x + 7 \\ 8x = 5 \\ x = \frac{5}{8} [/tex]
c)
[tex]4(x - 1) = 6(1 + x) \\ 4x - 4 = 6 + 6x \\ - 2x = 10 | \div ( - 2) \\ x = - 5[/tex]
d)
[tex] - 3(2x + 1) = - (x - 4) \\ - 6x - 3 = - x + 4 \\ - 5x = 7 | \div ( - 5) \\ x = - \frac{7}{5}[/tex]
Odpowiedź:
[tex]a)\\\\4x-3=3x+5\\\\4x-3x=5+3\\\\x=8\\\\\\b)\\\\5x+2=-3x+7\\\\5x+3x=7-2\\\\8x=5\ \ /:8\\\\x=\frac{5}{8}\\\\\\c)\\\\4(x-1)=6(1+x)\\\\4x-4=6+6x\\\\4x-6x=6+4\\\\-2x=10\ \ /:(-2)\\\\x=-5\\\\\\d)\\\\-3(2x+1)=-(x-4)\\\\-6x-3=-x+4\\\\-6x+x=4+3\\\\-5x=7\ \ /:(-5)\\\\x=-\frac{7}{5}\\\\x=-1\frac{2}{5}[/tex]