What is - 10x+9x+14-1=4

-10x+9x+14-1=4

then you add similar elements which gives you - x+14-1=4

next you subtract the numbers 14-1=13

then subtract 13 from each side - x+13-13=4-13

then you simplify - x = - 9

divide both sides my negative 1 - x/-1 = - 9/-1

and then you get the answer: x=9