Question

Respondam rápido pfvr e para hj

Resolva as inequações:

a) 2x - 18 > 4x - 38

b) 4x -20 > 12

c) 3(1 - 2x) < 2(x + 1) + X - 7

d) 8(x + 3) > 12 (1 - x)​

Answer 1

a) 2x - 18 > 4x - 38

2x-4x > -38+18

-2x > -20

x > -20/-2

x < +10

b) 4x -20 > 12

4x > 12+20

4x > 32

x > 32/4

x > 8

c) 3(1 - 2x) < 2(x + 1) + X - 7

3-6x < 2x+2+x-7

-6x-2x-x < +2-7-3

-9x < +2-10

-9x < -8

x < -8/-9

x > 8/9

d) 8(x + 3) > 12 (1 - x)

8x+24 > 12-12x

8x+12x > 12-24

20x > -12

x > -12/20

x > 3/5

✨ Espero ter ajudado ✨

26/08