Question

Can someone help me solve 70 < 3x + 10 < 100

Answer 1

20<x<30

Explanation:

70 < 3x + 10 < 100

first part:

70 < 3x + 10

70-10<3x

60/3<x

20<x ( first part solution)

second part

3x + 10 < 100

3x<100-10

3x<90

x<90/3

x<30 ( second part)

20<x<30