Resposta :
[tex]\sf 2(x + 1) + x - 7 = 10 \\\sf 2x + 2 + x - 7 = 10 \\\sf 3x + 2 - 7 = 10 \\\sf 3x - 5 = 10 \\\sf 3x = 10 + 5 \\\sf 3x = 15 \\\sf \\\sf x = \frac{15}{3} \\ \\\sf \orange {x = 5}[/tex]
[tex]\sf 2(x + 1) + x - 7 = 10 \\\sf 2x + 2 + x - 7 = 10 \\\sf 3x + 2 - 7 = 10 \\\sf 3x - 5 = 10 \\\sf 3x = 10 + 5 \\\sf 3x = 15 \\\sf \\\sf x = \frac{15}{3} \\ \\\sf \orange {x = 5}[/tex]