Question

4. Resolva as inequações.
a) 6x + 4 > 22
b) 3 + 5x = x - 1
c) 3x - 9 > 19 - 4x
d) 4 < 2 · (7 + x)
e) 5 + 2(3x - 1) > 7x + 6​

Answer 1

Resposta:

a) x>3

b)x=1

c) x>4

d)5<x

e)-3>x

Explicação passo-a-passo:

a) 6x+4>22

6x>22-4

x>18/6

x>3

b) 3+5x=x-1

3+1=-5x=x

4=-4x

x=4/4

x=1

c) 3x-9>19-4x

3x+4x>19+9

7x>28

x>28/7

x>4

d)4<2.(7+x)

4<14+2x

4-14<2x

10/2<x

5<x

e)5+2.(3x-1)>7x+6

5+6x-2>7x+6

5-2-6>-6x+7x

-3>x