Question

3. 17 ≤ 2x + 7 and 2x+7 ≤29

Answer 1

1. x=5

2. x=11

Explanation:

1. 17≤2x+7

can also be stated as,

2x+7≥17

then we can say,

2x+7=17

2x=17-7

2x=10

divide both sides by 2

x=5

2. 2x+7≤29

2x+7=29

2x=29-7

2x=22

divide both sides by 2

x=11