3x-12> 5x+2= ?
-10
-5
5
10
i just can't get the right answer

- 10

Step-by-step explanation:

Solving the inequality

3x - 12 > 5x + 2 ( subtract 5x from both sides )

- 2x - 12 > 2 ( add 12 to both sides )

- 2x > 14

Divide both sides by - 2, reversing the inequality symbol as a consequence of dividing by a negative quantity

x < - 7 ← reverse inequality symbol

The value of x for x < - 7 is - 10

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.

(-infinity,infinity)