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

Mathematics

2 answers:

SpyIntel [72]2 years ago

7 0

Let the variable n represent the unknown number

Start with n

$\tt \longrightarrow \: n$

Increased by 13 means add 13 to it

$\tt \longrightarrow \: n + 13$

Is 1989 means it equals 1989

$\tt \longrightarrow \: n + 13 = 1989$

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

White raven [17]2 years ago

4 0

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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