Question

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Six times a number is greater than 20 more than that number. What are the possible values of that number?
n<4
724
20
17>
20
one

Answer 1

6 times a number is greater than 20 more than that number

6 times a number means 6 times x

is greater than means >

20 more than that number means 20+x

6x>20+x

minus x both sides

5x>20

divide both sides by 5

x>4

x is any number more than 4

Answer 2

n > 4

Explanation:

Let n be the number

Six times a number: 6n

greater than: >

20 more than the number: n + 20

⇒ 6n > n + 20

Subtract n from both sides:

⇒ 5n > 20

Divide both sides by 5:

⇒ n > 4