Question

What does 30 ≤ x + 10 ≤ 80 simplify to

Answer 1

20 ≤ x ≤ 70

Explanation:

Given that:

30 ≤ x + 10 ≤ 80

By solving the left half inequality first:

30 ≤ x + 10

Subtracting 10 from both sides:

30 - 10 ≤ x + 10 -10

20 ≤ x

Now solving inequality of right half:

x + 10 ≤ 80

Subtracting 10 from both sides:

x + 10 -10 ≤ 80 - 10

x ≤ 70

So after simplification we get:

20 ≤ x ≤ 70

I hope it will help you!