Solve the compound - 20 ≤ 2x - 20 ≤ 10
1 answer:
Answer:
0≤ x ≤ 15
Step-by-step 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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