Question

2) Resolva as inequações, sendo U=Q:
a) 7 (-1) <5 - 2x
b) 6x – 3 (4-2x)>0
e) 2 (x-3) + 3(x-1) = 36​

Answer 1

Explicação passo-a-passo:

a) 7 (-1) <5 - 2x

-7 < 5 - 2x

-7-5 < -2x

-12 < -2x

2x > 12

x > 12/2

x > 6

b) 6x – 3 (4-2x)>0

6x -12+6x > 0

12x > 12

x > 12/12

x > 1

e) 2 (x-3) + 3(x-1) = 36

2x -6 +3x -3 = 36

5x = 36-9

5x = 28

x = 28/5