Question

Inequação do 1° grau
Me ajudem

a) 3x < 12
b) -2x > 10
c) -2x + 1 < 3
d) 2(x 3)

Answer 1

a) x<12/4
    x<3
b) x<-10/2
    x<-5
c) -2x<3-1
     -2x<2
     x>2/2
     x>1
d) 6x

Answer 2

a) 3 x < 12

x < 12 : 3

x < 4



b) -2x > 10

x < 10 : -2

x < -5



c) -2 x + 1 < 3

-2 x < 3 - 1

-2 x < 2

x > 2 : -2

x > -1



d) x > 2 (x 3)

2 x 3

2x . 3

6x
 


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