Question

1) 3x > 15;3) 4x >16;5) 7x > 3,5;​

Answer 1

1.

$3x > 15 \\ x > 15 \div 3 \\ x > 5$

2.

$4x > 16 \\ x > 16 \div 4 \\ x > 4$

3.

$7x > 3.5 \\ x > 3.5 \div 7 \\ x > 0.5$

Answer 2

To solve these inequalities for x, you'll need to isolate x on one side of the inequality sign. Here's how you can do it for each of the given inequalities:

1. 3x > 15:

   First, divide both sides of the inequality by 3 to isolate x: 3x/3 > 15/3 x > 5

So, the solution for this inequality is x > 5.

3. 4x > 16:

   First, divide both sides of the inequality by 4 to isolate x: 4x/4 > 16/4 x > 4

So, the solution for this inequality is x > 4.

5. 7x > 3.5:

   First, divide both sides of the inequality by 7 to isolate x: 7x/7 > 3.5/7 x > 0.5

So, the solution for this inequality is x > 0.5.

In summary:

1. x > 5
2. x > 4
3. x > 0.5