Question

18n+70
15n+90
Will these two ever have equivalent answers? I know the answer is no but I need to know WHY.

Answer 1

\[
18n+70=15n+90
\]

Answer 2

Solve for \(n\).

Answer 3

There might not be any solution where \(n\in\mathbb N\).

Answer 4

what i want to know is WHY they cant be equivalent

Answer 5

@wio

Answer 6

\[
18n+70=15n+90\\
3n = 20\\
n=\frac{20}{3}
\]

Answer 7

Two lines can only intersect at a single point.

Answer 8

Unless they are parallel, then there will be 0 or infinite solutions.

Answer 9

@wio I think I didn't give out enough info. Here's the full question: Is there a number of times for which A will be the same as B? Explain how you determined your answer.