a.
[tex]3x + 4 = x +8[/tex]
[tex]3x - x = 8 - 4[/tex]
[tex]2x=4[/tex]
[tex]x= \frac{4}{2} [/tex]
[tex]x=2[/tex]
b.
[tex]4-2y = y +10[/tex]
[tex]-2y-y = 10 - 4[/tex]
[tex]-3y = 6[/tex]
[tex] y=\frac{6}{-3} [/tex]
[tex]y = -2[/tex]
c.
[tex]5x+4-2x=-(x+8)[/tex]
[tex]3x + 4 = -x-8[/tex]
[tex]3x+x = -8-4[/tex]
[tex]4x = -12[/tex]
[tex]x= \frac{-12}{4} [/tex]
[tex]x=-3[/tex]
d.
[tex]-2-3k-2 = -2k + 8 - k[/tex]
[tex]-3k - 4 = - 3k + 8[/tex]
[tex]-4=8[/tex]
Impossible, we can't solve this equation.
Hope this helps !
Photon
