Question

Simplify the expression by combining like terms.
-13y - 6x - 7x

Answer 1

is it 13y-1x?

Answer 2

almost, you just have to be careful with negative signs. Would it help if it was written
-13y+(-6x-7x)

Answer 3

yes

Answer 4

is it plus instead of minus?

Answer 5

You mean between the -13y and the -6x? That's just a way to look at it that helps you to combine terms. The terms you combine are (-6x) and (-7x), which together give you a (-13x)