[tex]\sf (x-4)+x-4=57 \\\sf x - 4 + x - 4 = 57 \\\sf 2x - 8 = 57 \\\sf 2x = 57 + 8 \\\sf 2x = 65 \\\sf \red { x = \frac{65}{2}} [/tex]
OLÁ
[tex]( x - 4) + x - 4 = 57 \\ x - 4 + x - 4 = 57 \\ 2x - 4 - 4 = 57 \\ 2x - 8 = 57 \\ 2x = 57 + 8 \\ 2x = 65 \\ x = \frac{65}{2} \\ espero \: ter \: ajudado[/tex]
