Question

CALCULE x, SABENDO QUE a//b//c (a, b, c SÃO RETAS PARALELAS):

ajuda aqui genteee

Answer 1

a)

$\frac{2x-2}{3x+1}=\frac{4}{7}\\7(2x-2)=4(3x+1)\\14x-14=12x+4\\14x-12x=4+14\\2x=18\\x=\frac{18}{2} \\x=9$

b)

$\frac{6}{x}=\frac{4}{1,8}\\4.x=6.1,8\\4x= 10,8\\x=\frac{10,8}{4} \\x=2,7$