Answer:
12.33
Step-by-step explanation:
let 'n' = a number
2n + 7 = 5(n - 6)
2n + 7 = 5n - 30
-3n = -37
n = 37/3 or 12.33
The variable is 12 for the given expression.
The quantity that may change within the context of mathematical problem or experiment is called variable.
We have,
Sum of two times a number and 7 = five times the difference of a number and 6
Let us assume the variable as 'n'
According to the question, we have
[tex]2n+7=5(n-6)[/tex]
⇒[tex]2n+7=5n-30[/tex]
⇒[tex]-5n+2n=-30-7[/tex]
⇒[tex]-3n=-37[/tex]
⇒[tex]n=\frac{-37}{-3}[/tex]
⇒[tex]n=\frac{37}{3}[/tex]
⇒[tex]n=12.333[/tex]
⇒[tex]n=12[/tex] (round off to nearest hundred)
∴ Variable(Number) = 12
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