Question

Me ajudem!!! calcule o X das figuras abaixo.

Answer 1

Resposta:

$a)\frac{14}{3}\\\\b)25\\\\ c)\frac{5}{4}$

Explicação passo-a-passo:

$a)\frac{4}{x} =\frac{6}{7}\\\\6x=28\\\\x=\frac{28}{6} \\\\x=\frac{14}{3} \\\\b)\frac{5}{x}=\frac{2}{10} \\\\2x=50\\\\x=\frac{50}{2}\\\\x=25\\\\c)\frac{2x+1}{5x-1} = \frac{4}{6}\\\\20x-4=12x+6\\\\20x-12x=6+4\\\\8x=10\\\\x=\frac{10}{8}\\\\x=\frac{5}{4}$