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what is algebraic expression for a number increased by 13 is 1,989.​

Sagot :

Let the variable n represent the unknown number

  • Start with n

[tex] \tt \longrightarrow \: n[/tex]

  • Increased by 13 means add 13 to it

[tex] \tt \longrightarrow \: n + 13[/tex]

  • Is 1989 means it equals 1989

[tex] \tt \longrightarrow \: n + 13 = 1989[/tex]

➪ Thus, The final equation is (n+13=1989)

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Answer:

expression: x + 13 = 1989

explanation:

Let the number be x

so when this number is increased " + " by 13, it equals to 1989

processing:

  • x + 13 = 1989
  • x = 1989 - 13
  • x = 1976

The number is 1976.

The algebraic equation used: x + 13 = 1989

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