Question

alguien me ayuda ?????
con resolucion por favor ​

Answer 1

Em cada problema, como as retas são paralelas, aplicamos diretamente a propriedade 2 (ver imagem anexa)

Problema 1

$6x+3x=180\\\\\\9x=180\\\\\\x=180:9\\\\\\\boxed{\bf{x=20}}$

Problema 2

$180-(5x-10)+3x+10=180\\\\\\\not{180}-5x+10+3x+10=\not{180}\\\\\\-2x+20=0\\\\\\2x=20\\\\\\x=20:2\\\\\\\boxed{\bf{x=10}}$

Problema 3

$140+5x+10=180\\\\\\150+5x=180\\\\\\5x=180-150\\\\\\5x=30\\\\\\x=30:5\\\\\\\boxed{\bf{x=6}}$

Espero ter ajudado, boa sorte!!