X+y=3
Subtract x from both sides
y=-x+3
Substitute
2x--x+3=6
2x+x+3=6
3x+3=6
Subtract 3 from both sides
3x=3
Divide both sides by 3
x=1
The answer to the horizontal method is
4n³+2n²-6n-9
The answer to the FOIL problem is
10x²-25x-35
Hope this helps!
You get two numbers and put them together.
13/5 or 2 3/5 by the way nice profile picture
2+(-24x^2-24x)÷(12x^3-24x)
