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Sara says, "If you subtract 12 from my number and multiply the difference by - 3, the result is
- 45." What is Sara's number?


Sagot :

Answer:

3

Step-by-step explanation:

Answer:

[tex]27[/tex]

Step-by-step explanation:

Let Sara's number be [tex]x[/tex]. Now, we can build an equation.

We have that [tex]-3(x-12)=-45[/tex]. Aha! Now we have a path to the solution!

We can divide both sides of the equation by [tex]-3[/tex] to get [tex]x-12=15[/tex].

Lastly, we add [tex]12[/tex] to both sides to get [tex]x=27[/tex].

So, Sara's number is [tex]\boxed{27}[/tex].