Question

Por favorrrrr me ajudaaaaa​

Answer 1

Resposta:

$1) \: a) \: \frac{x}{5} = \frac{6}{10} \\ \\ 10x = 30 \\ \\ x = \frac{30}{10} \\ \\ x = 3$

$b) \: \frac{3}{7} = \frac{60}{x} \\ \\ 3x = 420 \\ \\ x = \frac{420}{3} \\ \\ x = 140$

$c) \: \frac{6}{x} = \frac{14}{35} \\ \\ 14x = 210 \\ \\ x = \frac{210}{14} \\ \\ x = 15$

$d) \: \frac{7}{6} = \frac{42}{x} \\ \\ 7x = 252 \\ \\ x = \frac{252}{7} \\ \\ x = 36$

$a) \: \frac{8}{12} = \frac{x}{3} \\ \\ 12x = 24 \\ \\ x = \frac{24}{12} \\ \\ x = 2$

$b) \: \frac{4x}{8} = \frac{3}{5} \\ \\ 20x = 24 \\ \\ x = \frac{24}{20} \div (4) \\ \\ x = \frac{6}{5}$

$c) \: \frac{6}{3x} = \frac{24}{35} \\ \\ 72x = 210 \\ \\ x = \frac{210}{72} \div( 6) \\ \\ x = \frac{35}{12}$

$d) \: \frac{8}{4x} = \frac{32}{48} \\ \\ 128x = 384 \\ \\ x = \frac{384}{128} \\ \\ x = 3$

$a) \: \frac{6}{3} = \frac{0.5}{x} \\ \\ 6x = 1.5 \\ \\ x = \frac{1.5}{6} \\ \\ x = 0.25$

$b) \: \frac{x}{4} = \frac{5}{1} \\ \\ x = 20$

$c) \: \frac{2x}{0.6} = \frac{6}{0.9} \\ \\ 1.8x = 3.6 \\ \\ x = \frac{3.6}{1.8} \\ \\ x = 2$

$d) \: \frac{x - 1}{5} = \frac{x - 5}{2} \\ \\ 2 \times (x - 1) = 5 \times (x - 5) \\ 2x - 2 = 5x - 25 \\ 2x - 2 - 5x + 25 = 0 \\ - 3x + 23 = 0 \\ - 3x = - 23 \times ( - 1) \\ 3x = 23 \\ \\ x = \frac{23}{3} \\ \\ x =$