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Brrunno [24]
3 years ago
8

"I'm thinking of a number. If you multiply

Mathematics
2 answers:
algol133 years ago
8 0
43+13=56
56/8=7

The number is 7. You basically just do the inverse/opposite of what it’s telling you to do to solve it. So instead of subtract, you add and instead of multiplying, you divide. You also do the steps in backwards order so you add them and then divide.

Hope this helps!
ExtremeBDS [4]3 years ago
3 0
First, set up an equation that models this statement.

N is your variable because it’s the unknown Number.

8n-13=43

Then, add 13 on both sides so you have the variable and it’s coefficient alone.

8n-13=43
+13.+13
________
8n=56

Then, divide the variable and the coefficient by the coefficient.

8n=56
—. —
8. 8

Now you have your variable all by itself, and you have the persons number.

n=7

Your number is 7.
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