[tex]2(3x + 5) = x + 5 [/tex]
[tex]6x + 10 = x + 5[/tex]
[tex]6x - x = 5 - 10[/tex]
[tex]5x = - 5[/tex]
[tex]x = \frac{5}{ - 5} = - 1[/tex]
2 )
[tex]3(2x - 1) - 4(3 - x) = 2x[/tex]
[tex]6x - 3 - 12 + 4x = 2x[/tex]
[tex]6x + 4x - 2x = +3 + 12[/tex]
[tex]8x = 15[/tex]
[tex]x = \frac{15}{8} [/tex]
3)
[tex]x {}^{2} - 16 = 0 [/tex]
[tex]x {}^{2} - 4 {}^{2} = 0[/tex]
[tex](x - 4)(x + 4) = 0[/tex]
[tex]x = - 4 \: ou \: x = 4[/tex]
bonne continuation ☺️
