Question

Solve the compound - 20 ≤ 2x - 20 ≤ 10​

Answer 1

0≤ x ≤ 15

Explanation:

• - 20 ≤ 2x - 20 ≤ 10​
• -20 + 20 ≤ 2x - 20 + 20 ≤ 10​ + 20 ⇒ add 20
• 0 ≤ 2x ≤ 30​ ⇒ divide by 2
• 0≤ x ≤ 15 ⇒ answer

or x = [0,15]

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