Question

29. Resolva as equações.​

Answer 1

Resposta:

Explicação passo-a-passo:

$d) \frac{3x+ 15}{2} + \frac{x}{6} = 8 + x => \frac{6.3x+ 6.15}{12} + \frac{2.x}{12} = \frac{12.8+ 12.x}{12} => \\\\18x + 2x - 12x= 96 - 90 => 8x = 6 => x =\frac{6}{8} => x =\frac{6:2}{8:2} => x = \frac{3}{4}$

$e) \frac{2y+ 1}{4} - \frac{y -5}{3} - \frac{y}{2} = \frac{1}{2} => \frac{3.2y+ 3.1}{12} - \frac{4.y - 4.5}{12} - \frac{6.y}{12} = \frac{6.1}{12} =>6y + 3 -(4y - 20) - 6y = 6 => \\6y - 4y - 6y = 6 - 3 - 20=> - 4y = - 17=> y = \frac{-17}{-4} => y = \frac{17}{4 }$