Question

1- resolva a inquaçao sabendo que U=Q.

a) 3(x + 2) - 4(x - 1) > 5

b) 7x - 9 < 2x + 16

Answer 1

Resposta:

a)

3x+6-4x+4 > 5

3x-4x +10>5

-x > 5-10

-x > -5 .(-1)

x < 5

b)

7x -9 <2x+16

7x -2x < 16+9

5x < 25

x < 25/5

x<5

Answer 2

a) 3(x + 2) - 4(x - 1) > 5

3x + 6 - 4 (x - 1) > 5

3x + 6 - 4x + 4 > 5

-x + 6 + 4 > 5

-x > 5 - 10

-x > -5

x < -5 / -1

x < 5

b) 7x - 9 < 2x + 16

7x - 9 - 2x < 16

5x - 9 < 16

5x < 16 + 9

5x < 25

x < 25/5

x < 5