To find the value of a variable you must know the basics of pre-Algebra.
Example:
2x+9=39
To find he answer of this you must subtract 9 from both sides
Then you are left with…
2x=30
Since 2x=30 means 2 times x equals 30
You can divide 2 from both sides to find the answer
Which is…
x=15
Step-by-step explanation:
f(a+h) – f(a)/h = –3
so the answer is –3
The only number I got was 1. I don’t think you divide 23 unless you want the remainder