Question

Me ajudem com os cálculos pfvrrrr ​

Answer 1

Resposta:

a) {5}

Explicação passo-a-passo:

$\frac{3 (x - 4)}{10} + \frac{1}{10} = \frac{2 (x - 2)}{15} \\\\\frac{3x - 12}{10} + \frac{1}{10} = \frac{2x - 4}{15}\\\\ \frac{3x - 12 + 1}{10} = \frac{2x - 4}{15}\\\\\frac{3x - 11}{10} = \frac{2x - 4}{15}$ multiplicando "em X":

$15 (3x - 11) = 10 (2x - 4)\\45x - 165 = 20x - 40\\45x - 20x = -40 + 165\\25x = 125\\x = \frac{125}{25}$

x = 5