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vlabodo [156]
3 years ago
6

The difference of twice a number and 3 is at most -21

Mathematics
1 answer:
Dmitrij [34]3 years ago
6 0

Answer:

The equation: 2<em>n</em> - 3 ≤ -21

The answer to the equation: <em>n</em> ≤ 9

Step-by-step explanation:

How to get the equation:

<u>The difference of</u> symbolizes subtraction. Because we are subtracting twice a number and 3, the first part of the equation can be written as 2<em>n</em> - 3. The <em>n</em> symbolizes the number.

<u>is at most</u> symbolizes a less than or equal to sign. That sign is ≤. And what is it less than or equal to? -21.

Now are equation is 2<em>n</em> - 3 ≤ -21

How to solve it:

2<em>n</em> - 3 ≤ -21

Add 3 to both sides of the equation

2<em>n</em> ≤ 18

Divide both sides of the equation by 2

<em>n</em> ≤ 9

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