Question

/X-4/=2

/X-2/=-4

/-2X-11/=4-X

/X+4/=2

Answer 1

Resposta:

a) X  = 6

b) X = -2

c) X = -15

d) X = -2

Explicação passo a passo:

$a) x-4=2\\x-4+4=2+4\\x=6\\b)x-2=-4\\x-2+2=-4+2\\x=-2\\c)-2x-11=4-x\\-2x-11=-x+4\\-2x-11+11=-x+4+11\\-2x=-x+15\\-2x+x=-x+15+x\\-x=15\\\frac{-x}{-1}=\frac{15}{-1}\\ x=-15\\d)x+4=2\\x+4-4=2-4\\x=-2$

Qualquer dúvida pode perguntar.