7x-4>9x+12

7x-9x > 12+4

-2x >16

x < -16/2

x < -8

2-z>3(z+3)

2-z > 3z+9

-z-3z > 9-2

-4z > 7

z < -7/4

2(3x+1)<4(5-2x)

6x+2 < 20-8x

6x+8x < 20-2

14x < 18

x < 18/14

x < 9/7

❤️❤️ Espero ter ajudado

10/11/22