Hi there, we need to isolate n to find its value, but we can also use mentalmaths to find the answer.
If we isolate n, here's how it works:
[tex]\pmb{\sf{n-3=10}}[/tex]
[tex]\pmb{\sf{n=10+3}}[/tex]
[tex]\pmb{\sf{n=13}}[/tex]
Now if we use mental maths, here's how it works:
[tex]\pmb{\sf n-3=10}}[/tex]
We know that 13 - 3 is equal to 10.
[tex]\pmb{\sf{13-3=10}}[/tex]
[tex]\pmb{\sf{10=10}}[/tex]
You can use any of the two methods. However the method of using mental maths may be hard for most equations, where we can't identify what the unknown equals just by looking at the equation and figuring out the answer. In that case, we will need to use the other method - isolating the variable.
I hope I've made the concept clear enough for you!
Answers & Comments
Verified answer
Step-by-step explanation:
If n - 3 = 10, we can solve for the value of n by isolating n on one side of the equation.
Adding 3 to both sides of the equation, we get:
n - 3 + 3 = 10 + 3
Simplifying the left side by canceling out -3 and +3, we get:
n = 13
Therefore, the value of n is 13.
[tex]\pmb{\sf{Answer:}}[/tex]
[tex]\blacksquare \ \ \ \boxed{\sf{n-13}}[/tex]
[tex]\pmb{\sf{Solution:}}[/tex]
Hi there, we need to isolate n to find its value, but we can also use mental maths to find the answer.
If we isolate n, here's how it works:
[tex]\pmb{\sf{n-3=10}}[/tex]
[tex]\pmb{\sf{n=10+3}}[/tex]
[tex]\pmb{\sf{n=13}}[/tex]
Now if we use mental maths, here's how it works:
[tex]\pmb{\sf n-3=10}}[/tex]
We know that 13 - 3 is equal to 10.
[tex]\pmb{\sf{13-3=10}}[/tex]
[tex]\pmb{\sf{10=10}}[/tex]
You can use any of the two methods. However the method of using mental maths may be hard for most equations, where we can't identify what the unknown equals just by looking at the equation and figuring out the answer. In that case, we will need to use the other method - isolating the variable.
I hope I've made the concept clear enough for you!
~Just a Student~