4 less than seven times a number is 72

Question

So we have to write a algebraic equation that represents each statement

 

Answer 1

Ok so think of this in terms of an equation. You have your answer is 72, we just need to write down how we get it. Since the number is unknown you need a variable (x, y, n) or whatever letter you want.

so 7n-4=72 Because 7 times our unknown number (n) and then less (subtract) 4.