Question

How would you simplify this -5x+2x+7y-3x

Answer 1

You can combine numbers if they have the same terms

-5x+ 2x +7y -3x

You can see that -5 , 2 , -3 is integer numbers and have same terms are x so combine them

-5x+ 2x -3x = -3x -3x = -6x

Of course 7y is not same term with -6x , x and y is different so the answer is

-6x+7y or 7y-6x is same thing

Answer 2

In these types of problems, the first step is to combine like terms. Like terms are terms with the same exponent (power), and the same variable (like all x's). In the above equation, we can combine -5x, 2x and -3y. Let's do it:
$-5x+2x+7y-3y = -6x+7y$

The next step would be to factor out the common ratio, which is not applicable here, so your answer would be -6x + 7y. Hope this helps!