21.8k views
20 votes
Seven less than a number is 18

User AnthonyI
by
4.2k points

2 Answers

13 votes

hello!

Let the number be n.

Now, "seven less than a number" means we subtract 7:-

n-7

This expression is equal to 18:-


\sf{n-7=18}


\mathcal{SOLUTION:-}

  • Add 7 to both sides:-


\bigstar{\boxed{\pmb{n=25}}}

note:-

Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I will comment and/or edit my answer :)

User Arsonik
by
4.5k points
10 votes
X-7=18
+7 to both side
X=25
User GingerBreadMane
by
4.2k points