Question

Answer.
Which of the following values
satisfies the inequality 9 < 2x + 7 <15

Answer 1

1<x<4

Explanation:

9<2x+7<15

9+−7<2x+7+−7<15+−7(Add -7 to all parts)

2<2x<8

2 /2 < 2x /2 /< 8 /2 (Divide all parts by 2)

1<x<4