Question

Ajudem ai pfv tarefa de geometria

Answer 1

Resposta:

a)$x=\frac{21}{2}$

b)$x=15$

c)$x=6$

d)$x=9$

Explicação passo-a-passo:

a)

$\frac{x}{14} =\frac{9}{12}$

$x=\frac{9*14}{12}$

$x=\frac{21}{2}$

b)

$\frac{12}{2x-6} =\frac{8}{x+1}$

$12(x+1)=8(2x-6)$

$12x+12=16x-48$

$12x-16x=-12-48$

$-4x=-60$

$x=15$

c)

$\frac{x}{9} =\frac{8}{12}$

$x=\frac{8*9}{12}$

$x=6$

d)

$\frac{x-1}{2} =\frac{x+3}{3}$

$2(x+3)=3(x-1)$

$2x+6=3x-3$

$2x-3x-=-3-6$

$2x-3x-=-3-6$

$-x=-9$

$x=9$