Resposta :
Bom Dia !!!
[tex]Expressando\ calculo:\\\\x + 3x = 2x + 50\\\\Letra\ b\ correta = x + 3x = 2x + 50\\\\Resolvendo:\\\\4x - 2x = 50\\\\2x = 50\\\\x = 50/2\\\\x = 25[/tex]
Espero ter ajudado :-)
Att: LDC
Bom Dia !!!
[tex]Expressando\ calculo:\\\\x + 3x = 2x + 50\\\\Letra\ b\ correta = x + 3x = 2x + 50\\\\Resolvendo:\\\\4x - 2x = 50\\\\2x = 50\\\\x = 50/2\\\\x = 25[/tex]
Espero ter ajudado :-)
Att: LDC