Question

resolva as inequaçoes 7x-4>9x+12

Answer 1

Olá Ana !

$7x - 4 > 9x + 12 \\ 7x - 9x > 12 + 4 \\ - 2x > 16 \\ 2x < - 16 \\ x < - \frac{16}{2} \\ x < - 8$

Tenha bons estudos !

Answer 2

7x - 4 > 9x + 12

7x - 9x > 12 + 4
- 2x > 16 (multiplicando por -1)
2x < -16
x < -16/2
x < -8