Question

Which one of the following reasons does NOT explain why 4x+5y≠9xy?

Answer 1

The terms 4x and 5y has different variable present in it. $4x + 5y \neq 9xy$

Solution:

Given that,

$4x + 5y \neq 9xy$

The reason is:

When we are adding terms which has exactly the same variables, we must add the constants and let the result stand with variable

Which means,

4x + 10x = 14x

But,

We cannot add terms that has different variable

Which means,

4x + 5y

Here, both the terms 4x and 5y has different variable present in it. Hence they cannot be added together

$4x+5y\neq 9xy$