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-20 less than or equal to 2x -20 less than or equal to 30

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Answer = 0 ≤ x ≤ 25

Explanation:

Break the word equation into two for better understanding

-20 less than or equal to 2x -20 >>>> -20 ≤ 2x -20

2x -20 less than or equal to 30 >>>> 2x -20 ≤ 30

Keeping in view the question we deduce the equation

-20 ≤ 2x -20 ≤ 30

Solve and simplify the above equation accordingly, by breaking down the equation

-20 ≤ 2x -20 and 2x -20 ≤ 30

-20+20 ≤ 2x and 2x ≤ 30 +20

0 ≤ x (0/2) and x ≤ 25 (50/2)

So, 0 ≤ x ≤ 25


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