Seven times a number is the same as 12 more than 3 times the number. How do you find the number?
1 Answer
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Explanation:
Make n as the unknown number.
actually
You can see that there are two different terms.
The terms that are alike are 7n and 3n.
You need to send either one term to the left or to the right.
I would choose the term with
So, I would bring
As you can see,
Simplify, if possible.
There are two terms with
What is
Yeah, it's positive
So now you have
How do you solve
As you can see,
So what is the opposite of multiplication??
Yes! It's division.
Send
Final step,
What is 12 divide 4?
Yeah! It's 3, huh? Easy as that.
So now you've found out that the number is 3.
Write out all your working: