Question

Resolva as inequações:
a)8-3(y+5)≥0
b)4-3(x+1)≥2-(x-1)
c)n-1/4+n/6-n-2/3>0

Answer 1

a) 8-3(y+5)≥0
8-3y-15≥0
-3y≥ 15 (-1)
3y < 15 o sinal que era > passa a ser <
y< = 15/3 = y<5

b) 4-3(x+1)≥2-(x-1)
4-3x-3≥ -2x+1
-3x+2x≥1+3-4
-x≥0 (-1)
x>0

c) n-1/4+n/6-n-2/3>0 simplica os denominadores
3n-3+2n-12n-8>0/12
-7n>11 (-1)
7n<-11
n< - 11/7