Answer:
-3x+4y-6
Step-by-step explanation:
First, combine all like terms.
In 7x - 2y - 1 + 6y - 10x - 5 there are two of the same terms.
7x-10x=-3x
-2y+6y= 4y
-1-5= -6
So, it will be -3x+4y-6
