Question

36) x-2x - 8-0
38) 3x + 4x - 4-0
40) 5x +12x+4- 0​

Answer 1

Resposta:

$36)\ x=-8\\\\38)\ x=\frac{4}{7}\\\\40)\ x=-\frac{4}{17}$

Explicação passo-a-passo:

$36)\\x-2x-8=0\\-1x-8=0\\-8=x\\\\38)\\3x+4x-4=0\\7x-4=0\\7x=4\\x=\frac{4}{7}\\\\40)\\5x+12x+4=0\\17x+4=0\\17x=-4\\x=-\frac{4}{17}$