Question

resolva as inequaçao de 1 gral
a) x+1<2x
b)7x+3<0
c)2(x-1)_>5-3(1-x)

Answer 1

Resposta:

a) x+1<2x

x-2x+1<0

-x+1<0

-x<-1

multiplicando por menos -1 temos

x>1

b)7x+3<

7x<3

x<3/7

c) 2(x-1)>5-3(1-x)

2x-2>5-3+3x

2x-3x>5+2

-x>7

multiplicando por -1 temos:

x<7