Answer:
y - 25 = 4
Explanation:
i’m guessing you meant this as “25 less than a number = 4.” so i can put tha as an expression.
Basically you’re gonna want to take the unknown number and turn it into a variable.
You should know what a variable is but if not it’s just a letter in place for an unknown number.
so since the unknown number, we will use the letter y as the variable.
so y-25=4
boom that’s it.
since there’s an unknown number in place of the bigger number, we can just put the variable and write the rest out as a regular problem.
and if you need to know the variable number it’s 29.