Question

Resolva as inequações:
a) 8x + 2 > 7 + 5x
b) 3x + 7 < 5x + 19
c) 2(x + 1) > 3(x + 2)

Answer 1

a) 8x + 2 > 7 + 5x

8x - 5x > 7 - 2

3x > 5

x > 5/3

b) 3x + 7 < 5x + 19

3x - 5x < 19 - 7

- 2x < 12 *(-1)

2x > -12

x > - 12/2

c) 2(x+1) > 3(x + 2)

2x + 2 > 3x + 6

2x - 3x > 6 - 2

- x > 4 *(-1)

x < -4