Question

пж помагите))))))))))))

Answer 1

а)
$frac{4x - 32}{12} = frac{4}{5}$
$frac{4x - 32}{12} - frac{4}{5} = 0$
$20x - 160 - 48 = 0$
$20x = 208$
$x = 10,4$

б)
$frac{6x + 3}{27} = frac{5}{9}$
$frac{6x + 3}{27} - frac{5}{9} = 0$
$6x + 3 - 15 = 0$
$6x = 12$
$x = 2$

в)
$frac{4x - 24}{60} = frac{4}{15}$
$frac{4x - 24}{60} - frac{4}{15} = 0$
$4x - 24 - 16 = 0$
$4x = 40$
$x = 10$

г)
$frac{3}{4} = frac{7x + 9}{40}$
$frac{3}{4} - frac{7x + 9}{40} = 0$
$30 - (7x + 9) = 0$
$30 - 7x - 9 = 0$
$-7x = -30 + 9$
$-7x = -21$
$x = 3$